Chevrolet - RV - Wiring Diagram - 1989 - 1989

1989 WIRING DIAGRAMS R-V, P TRUCK MODELS When reference is made in this manual to a brand name, number, or specific tool, an equivalent product may be used in place of the recommended item All information, illustrations, and specifications contained in this manual are based on the latest product information available at the time of publication approval. The right is reserved to make changes at any time without notice. No part of this publication may be reproduced, stored in any retrieval system or transmitted, in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the GMC Truck Division of General Motors Corp. This includes all text, illustrations, tables and charts. X-8940 ©1988 General Motors Corporation AH rights reserved August, 1988 Printed in U.S.A. WIRING DIAGRAMS 2 DESCRIPTION WIRING DIAGRAMS All diagrams in this manual are based on the latest product information at the time of publication approval. The right is reserved to make changes at any time without notice. SUBJECT Description Tracing Circuits Baste Electric Circuits Circuit Diagnosis Abbreviation List Diagnostic Wire Size Conversion Table On-Vehicle Service Circuit Maintenance Weather Pack Connectors Metri-Pack Connectors Wiring Repair Special Tools PAGE Tools and VEHICLE R/V P :Chassis Repair 2 2 2 8 7 11 11 11 11 12 12 14 15 SECTION Models A-1 B-1 Figure 1—Wire Coding • The diagrams are to be traced from the source of electricity (the battery positive post) to ground. The ground may be a chassis ground on a certain component (such as an alternator or a starter), or a wire from a component to a chassis or frame ground (such as used on the electronic control module and instrument panei). All grounds are connected to the negative battery post through body and/or angina ground wires and straps. • Many times the source of the electricity is shown as the ignition switch or the fuse block. This is done to eliminate the confusion that would occur if the entire power distribution was shown in each circuit. For a detailed outline of the power to the ignition switch or the fuse block, refer to the power distribution circuit. • The ground portion of the circuit (usually circuit 150 or 151) may be shown entirely, or it may refer to the ground distribution circuit in order to avoid confusion of listing ail the grounds in one splice on a single page. • For ease of diagnosis, ali splices and grounds are identified by number, and all the wires on a common splice or ground are identified by circuit number, size (in mm) and color. Each component or circuit common to s spliced wire is called out by the page number of that circuit. This will help identify and diagnose multiple electrical problems that could occur in a truck. • All connectors are shown with their part numbers to save time when ordering these parts. • Switches are shown in their at rest positions, unless otherwise marked. TRACING CIRCUITS Figures 1 through 3 are examples of how the wiring diagrams are laid out., and will be referred to, throughout this description. In order to trace a circuit on these diagrams, start from the source, the battery. In figure 2, the battery positive circuit is a 19.0 mm black wire. This wire runs from the battery to the starter motor, and supplies power to the starter motor post. Once you have determined the source of power to your component, from the Power Distribution Circuit (figure 2), then refer to the individual circuit you are working on for more detail about that circuit. (Figure 3 shows the starting circuit). In figure 3, the starter motor circuit is shown. This circuit shows the battery feed coming from the Power Distribution page. The cable comes from the battery to the start©? positive post. At the starter post, other circuits such as the generator, ignition switch, and electronic control module are fed. When the ignition switch is in the start position, power flows from circuit #2 through the switch, to circuit #6. Circuit #6 goes through the clutch switch with an automatic transmission. At the clutch switch the circuit is opened, unless the dutch is depressed. At the solenoid the current flowing from circuit #6 closes the soiertoid, allowing current to flow from the battery at circuit #1 to the starter motor. The current flowing to the starter motor, causes the starter motor to spin. BASIC ELECTRICAL CIRCUITS An electrical circuit starts from a supply of electricity back to a load and then conducts the electricity back to the supply of electricity. There should be a device to open and close the circuit, and a protective device to open the circuit in case too much current is drawn into the circuit by an overload condition. Electrical circuits can be set up as series circuits, parallel circuits or series/parallel' circuits. The circuits in trucks are usually parallel circuits. WIRING DIAGRAMS 5 WIRING DIAGRAMS 6 path. For example the switch controlling the headlights is at the power end of the circuit while the door switch controlling the domelight completes the ground path. Relays are remotely controlled switches. They are used in high current circuits and in circuits controlled by sensors. Relays are designed so that a small current circuit wi!3 he able to control a large current circuit. CIRCUIT BREAKERS (Figure 7) Circuit breakers are another form of circuit protector. There are two types of circuit breakers; automatic reset and remote reset. The automatic reset breaker opens when excess current heats a bimetallic strip, causing the strip to bend and open a set of contacts. Then the strip cools and closes the contacts. So the circuit breaker opens and closes until the excess current condition is corrected or the circuit is disconnected from the power supply. The remote reset circuit breaker has a heating wire wound around the bimetallic strip. When an excess current happens, the strip heats, bends, and opens the contacts. Then a small current flows through the heating wire, keeping the strip hot and the contacts open. This type of breaker will stay open until either the power supply is disconnected from the circuit or the breaker is removed from the circuit. Then the breaker can cool and reset. Figure 4—Basic Circuits SERIES CIRCUITS (Figure 4 and 5) In a series circuit, the electrical devices are connected together to form one current path to and from the power supply. In a series circuit the same current flows through all of the devices. PARALLEL CIRCUITS (Figure 5) In a parallel circuit, the electrical devices are connected to form more than one current path to and from the power supply. In a parallel circuit the supply voltage is the same in each current path. Figure 5—Series/Parallel Circuits FUSIBLE LINK A fusible link is a section of wire that is usually four gage sizes smaller than the circuit it protects. A special insulation is used that swells when heated by the wire. Fusible links are usually found in the engine compartment harnesses. The function of the fusible link is to melt open when an overload occurs, thus preventing any damage to the circuit. CIRCUIT DIAGNOSIS Figure 7—Circuit Controllers FUSES (Figure 8) The most common protector in the vehicle circuit is a fuse. A fuse consists of a fine wire or strip of metal inside a glass tube or plastic housing. The strip melts and interrupts the flow of current in the circuit when there Is an overload caused by an unwanted short or ground. The fuse is designed to melt before the wiring or electrical components in a circuit can be damaged. Naturally, the cause must be located and corrected before the fuse is replaced or the new fuse will also blow. SERIES/PARALLEL CIRCUIT (Figure 5) A series/parallel circuit consists of a single current path circuit and a circuit with more than one current path to and from" the voltage supply. CIRCUIT COMPONENTS (Figure 6) The usual circuit path starts at the power supply which is the battery/generator system. Next in the circuits is the circuit protection component which cars he a fusible link, a fuse, or a circuit breaker. Then the circuit goes to the circuit controller which can be a switch or a relay. From the circuit controller the circuit goes into the circuit load. The circuit load can be one light or many lights in parallel, an electric motor or a solenoid. After the electricity has passed through the load it must return to the power supply via the ground path. The ground path can be a wire in the harness or it could be through the load housing into the body or frame, thus returning the electricity to the power supply. The body and frame are connected by flexible ground straps. CIRCUIT LOADS ( F i g u r e 7) Circuit loads are the components that use most of the energy in circuit. The energy converts to motion, light, or heat, lights, motors, and engine heaters are the most common loads in circuits. Since different circuits handle different amounts of current, fuses of various ratings are used. Fuses are rated in amperes. Be sure to replace a blown fuse with a fuse of the connecting rating. Figure 6--Circuit Components CIRCUIT CONTROLLERS (Figure 7) Circuit controllers consist of switches or relays. Switches are usually operated by a mechanical means such as a hand or lever. Switches are usually at the beginning of a circuit but can be used to control a ground A clear understanding of the circuit and a wiring diagram are needed for effective diagnosis. Use a logical sequence of testing to find the trouble. Use the diagnostic tools. After the trouble is fixed, make sure the circuit works correctly. CIRCUIT MALFUNCTIONS There are three electrical conditions that can cause a nonworking circuit; an "Open Circuit", a "Short Circuit", or a "Grounded Circuit" OPEN CIRCUIT (Figure 8) An open circuit occurs whenever there is a break in the circuit. The break can be corrosion at the connector, a wire broken off in a device, or a wire that burned open from too much current. SHORT CIRCUIT (Figure 9} A short circuit happens when the current bypasses part of the normal circuit. This bypassing is usually caused by wires touching, salt water in or on a device such as a switch or a connector or solder melting and bridging conductors in a device. WIRING DIAGRAMS 7 GROUNDED CIRCUIT(Figure 10) A ground circuit is like a short circuit but the current flows directly into a ground circuit that is not part of the original circuit. This may be caused by a wire rubbing against the f r a m e or body. Sometimes a wire will break and fall against metal that is connected electrically to the ground side of the power supply. A grounded circuit may also be caused by deposits of oil, dirt and moisture around connections or terminals, which provide a good path to ground. WIRING DIAGRAMS 8 EFE—Early Fuel Evaporation EGR—Exhaust Gas Recirculation ELEC—Electric ELEC—Electronic CNTRL—Control MOD—Module ENG-—Engine EPR—Exhaust Pressure Regulator ESC—Electronic Spark Control EST—Electronic Spark Timing EVRV—Electronic Vacuum Regulator Valve EXC---Except F-PUMP—Fuel Pump FLASH—Flasher FRT—Front 4WD—Four Wheel Drive Figure 8- -Open Circuit GEN—Generator GRA—Gray GRD—Ground GRN—Green Figure 10—Grounded Circuit Figure 9—Short Circuit ABBREVIATION LIST The following is a list of abbreviations used in the wiring diagrams. The abbreviations have been developed in such a way that their meaning should be clear. Use this page as a reference to determine the meaning of an abbreviation if necessary. A --- Ampere A/C--- Air Conditioner ACC --Accessory A.I.R.---Air Injection Reaction AIR/COND—Air Conditioner ALDL—Assembly Line Diagnostic link ALT—Alternator AMP—Ampere ANTI—Anticipate ASM—Assembly ASSY- -Assembly ALIO—Audio AUTO—-Automatic AUX—Auxiliary BAT—Battery BATT— Battery B I--LEV—B i-Level BLK—Biack BUT- -Belt BLU-Blue BOT--Bottom BRK—Brake BRN--Brown BU---Backup BUZZ—Buzzer CIR/BRK—Circuit Breaker CIRC- -Circuit CLSTR- -Cluster CNTL---Control COMP----Compartment COMP—Compressor CONN—Connector PONV— Convenience CTSY—Courtesy CYL—-Cylinder DK—Dark DIAG—Diagnostic DIM—Dimmer DIR—Directional DISC—Discrete DIST—Distributor DIV— Diverter DM—Dome DR—Door ECM—Electronic Control Module HAND—Handling HAZ—Hazard HD—Heavy Duty HD LP—Headlamp HEI—High Energy Ignition HI—High HTR—Heater IAC-Idle Air Control IGN—Ignition IL.LUM—Illumination I/P—Instrument .Panel INC—Increased IND—Indicator INJ —Injector INST PNL Instrument Pane! INTER—Interior LD—Light Duty LH—Left Hand LO—Low LP—Lamp LPS- -Lamps LT~~Light LTR-~Ughter M—Motor MAN—Manual MAP—Manifold Absolute Pressure MAX---Maximum MED—Medium MRKR—Marker MULT—Multiple NAT--Natural NEUT—Neutral NO—Normally Open NC—Normaiiy Closed ORN--Orange PK—Park PLR—Puller PNKf-PInk PNL—Panel PPL—Purple PRESS—Pressure WR—Power RCVR—Receiver REF—Reference RESIST---Resistance RM—Right Hand RPO—Regular Production Option SEN---Sensor SEND—Sender SIG—Signal SIL—Silver SKT—-Socket SOL—Solenoid SPEEDO—Speedometer STR—Stripe SW—Switch TACH-—-Tachometer TBI—Throttle Body Injection TCC-—Torque Converter Clutch TEMP--Temperature T/L-—Tail Lamp TRANS- -Transmission TYP-- Typical V—Volt VAC—Vacuum VLV—Valve VSS—Vehicie Speed Sensor W/—With W/O—Wttmut W/S—Windshield W WASHER—Window Washer WOO—Window WHT-White WRG—-Wiring YEL—Yellow WIRING DIAGRAMS 10 WIRING DIAGRAMS 9 DIAGNOSTIC TOOLS 30. Power Source 31 Circuit Breaker 32. Switch (Closed) 33 Ammeter 34. Load B-06086 40. 41. 42. 43. 44. Power Source Circuit Breaker Switch (Open) Ohmmeter Load 50. 51. 52. 53. 54. UNPOWERED TEST LIGHT (Figure 12) This tool consists of a 12 volt light with leads. The ends of the leads usually have alligator clamps, but various kinds of probes, terminal spades, and special connectors are used also. NOTICE: The followmg instruments: Ammeter, Voltmeter, a n d Ohmmeter, each have a particular application for trouble shooting electrical circuits. This test light is used mainly for testing components that are disconnected from the vehicle power supply. The power test light is also useful for testing suspected high resistance points in a circuit such as connectors and ground circuits that are corroded or loose. When using a ammeter or voltmeter, and the value being tested is unknown always use the highest scale first and work downward to a midscale reading whenever possible. This will avoid damage to the Instrument. Never use an ohmmeter in a power circuit, or as a substitute for a vohmeter or ammeter as damage to the instrument will result. AMMETER (Figure 12 and 15) Disconnect the circuit from the power source before connecting the ammeter. The ammeter measures the amount of electrical current, amperes, moving through a conductor. The ammeter must be placed in series with the circuit being tested. Be sure that the ammeter's positive terminal is connected to the positive (battery) side of the circuit and is negative terminal to the negative (ground) side of the circuit. JUMPER The jumper is usually a long wire with alligator clamps. A version of the jumper has a fuse holder in it with a 10 Amp fuse. This will prevent damaging the circuit if the jumper is connected in the wrong way. OHMMETER (Figure 13 and 15) The ohmmeter is an instrument designed to indicate resistance in ohms, it is used to test the condition of a unit disconnected from the circuit. The jumper is used to locals opens in a circuit. One end of the jumper is attached to a power source and then the other end is attached to the load in the circuit, i.e.; light, motor. If the load works, try "jumping" to circuit points that are progressively closer to the power supply. When the circuit load stops working, the open has been located. Ohmmeter Calibration When the ohmmeter probes are connected together, a circuit is completed causing the meter needle to deflect The needle should read ZERO ohms, if it does not, rotate the CAL or ADJ knob to ZERO the needle. The jumper is also used to test components in the circuit such as connectors, switches, and suspected high resistance points. B-06155 A = 3 Volts B = 7 Volts C = 13 Volts Figure 14—Voltmeter Figure 13 --Ohmmeter POWERED TEST LIGHT (Figure 11) This light is a pencil shaped unit with a self contained battery, a 1 5 volt light bulb, a sharp probe and a ground lead fitted with an alligator clip. VOLTMETER SCALE: 0 Volts through 15 Volts B-06087 Figure 12—Ammeter The unpowered test light is used on an open circuit. One lead of the test light is grounded and the other lead is moved around the circuit to find the open. Depending on the physical layout of the circuit, sometimes it will be easier to start at the power supply and other times it is easier to start at the Circuit load or ground circuit. Power Source Circuit Breaker Switch (Closed) Voltmeter Load When the probes are held apart, the needle moves to the maximum (infinite) resistance side of the scale. The meter is now ready for use. Refer to figure 14 for a typical application of the ohmmeter. VOLTMETER (Figures 14 and 15) The voltmeter (properly observed) will give the technician more information than the ammeter, ohmmeter and test light combined, its application for troubleshooting here is to measure the electrical pressure (voltage) drop in a resistance circuit (figure 14). Io use a voltmeter for troubleshooting an electrical problem, connect it in parallel with the existing circuit (figure 10). If the voltmeter is connected in series with the circuit being tested, the nature of the circuit would be changed and the reading would have no particular value or use. Connect the meter terminals according to polarity as shown in figure 14. The dash mounted voltmeter (in the vehicle) should also be observed for monitoring proper operation of the generator battery cranking motor, and cranking circuit. In this application, battery voltage drop can be monitored while the engine is cranking; and after the engine is running, generator output voltage cars be monitored. This can be a valuable first step prior to diagosing other electrical problems. WIRING HARNESS AND WIRES Every wire is a specific size with colored or striped insulation that is indicated on the wiring diagrams. Insulation colors help to trace circuits and to make proper connections. Abbreviations and symbols used for indicating wire insulation colors and patterns are as follows: BIK Black BLU Blue BRN Brown PPL Purple CHK Check TR Tracer CR Cross YEL .Yellow GRN Green // Parallel NAT Natura! WHT White SGL Single STR Stripe Orange PNK Pink ORN GR Gray DK Dark Some wires are grouped and taped together or encased in a split plastic casing. This grouping of wires is called a harness. For some purposes, it is more practical to use a single wire protected by a braided tubing called a loom. AMMETER SCALE: 0 Amperes through 10 Amperes E = 1 Ampere F = 1.8 Amperes G = 9 Amperes OHMMETER SCALE: 0 Ohms through Infinity H = 5 Ohms I = 36 O h m s J = 115 O h m s K = 350 O h m s Figure 1 5 - M e t e r Scales WIRING DIAGRAMS 11 Wiring harnesses are joined by using a multiple plug and receptacle connector block, or a terminal post chassis junction block. In the instrument panel area plastic insulated blade-type connectors and screw-type terminals are used. Each harness or wire must be held securely in place by clips or other holding devices to prevent chafing of the WIRE SIZE CONVERSION TABLE METRIC SIZE (mm)2 0.22 0.35 0.5 0.8 1.0 2.0 3.0 5.0 8.0 13.0 19.0 32.0 40.0 50.0 62.0 insulation. WIRE SIZE Wire size in a circuit is determined by the amount of current, the length of the circuit and the voltage drop allowed. Wire size is specified using the metric gage. The metric gage describes the wire size directly in cross section area measured in square millimeters. 24 22 20 18 16 14 12 10 8 6 4 2 1 0 00 MAINTENANCE AND REPAIR All electrical connections must be kept clean and tight. Loose or corroded connections may cause a discharged battery, difficult starting, dim lights, and possible damage to the generator and regulator. Wires must bo replaced if insulation becomes burned, cracked, or deteriorated. To splice a wire or repair one that is frayed or broken always use rosin flux solder to bond the splice and insulating tape to cover all splices or bare wires. WRING CONNECTOR TERMINAL REPLACEMENT (BLADE TYPE) Figure 17—Resetting the Lock Tang METRl-PACK CONNECTORS WEATHER-PACK CONNECTORS The Metri-Pack connectors use a pull-to-seat type terminal, as shown in figure 19. The special tool required to remove the terminal is J-35689-A terminal remover. If removal is attempted with an ordinary pick, there is a good chance that the terminal will be bent or deformed. Refer to figure 19. Special connectors known as Weather-Pack connectors (figure 19) require a special tool J-28742 for servicing. This special tool is required to remove the pin and sleeve terminals. If removal is attempted with an ordinary pick, there is a good chance that the terminal will be bent or deformed. Unlike standard blade-type terminals, these terminals cannot be straightened once they are bent. Mate sure that the connectors are property seated and all of the sealing rings in place when connecting the leads. The hinge-type flap provides a back-up, or secondary locking feature for terminals. They are used to improve the connector reliability by retaining the terminals if the small terminal lock tangs are not positioned properly. Molded-on-connectors require complete replacement of the connection. This means splicing a new connector assembly into the harness. Environmental connections cannot be replaced with standard c o n n e c t i o n s . Instructions are provided with the Weather-Pack connector and terminal packages. CIRCUIT MAINTENANCE AND REPAIR Never replace a wire with one of a. smaller size or replace a fusible link with a were of a larger size. With the low current and voltage levels found in some circuits, it is important that the best possible bond at all wire splices be made by soldering the splices. Use care when probing the connections or replacing terminals in them, it is possible to short between opposite terminals. If this happens to the wrong terminal part, it is possible that d a m a g e may be d o n e to c e r t a i n components. Always use jumper wires between connectors for circuit checking. Never probe through the Weather-Pack seals. When diagnosing for possible open circuits, it is often difficult to locate them by sight because oxidation or terminal misalignment are hidden by the connectors. Merely wiggling a connector on a sensor or in the wiring harness may correct the open circuit condition. This should always be considered when an open circuit is indicated while troubleshooting. Intermittent problems may also be caused by oxidized or loose connections. AWG SIZE ON-VEHICLE SERVICE When replacing wire, it is important that the correct size wire be used as shown on applicable wiring diagrams or parts book. Each harness or wire must be held securely in place to prevent chafing or damage to the insulation due to vibration. WIRING DIAGRAMS 12 Figure 16—Removing the Terminals from 2. Terminal (61). [><] Install or Connect (Figure 17) I. Pry up on the tang (70). 2. Terminal into the connector. Tool Required: J-28742 Terminal Remover 1. Primary lock (121) by lifting. 2. Connector sections. 3. Secondary lock (125) by spreading the sides of the hasp, thus clearing the staples and rotating the hasp (127). 4. Terminal (131) by using J-28742 (128). * Snip off the old terminal assembly. 5. 5 mm of the wire insulation (130). [^] Clean Terminal barrel (124). [><] Install or Connect (Figure 19) the Connector 1. Terminal insulator (134) on the wire. Slide the insulator back on the wire about 8 cm (3 inches). 2. Terminal (131) on the wire. * Roll crimp (132) and solder the terminal 3. Terminal insulator (134) and the roll crimp (133). 4. Terminal into the connector. 5. Secondary lock (125). 6. Connector sections until the primary lock (121) engages. WIRING CONNECTOR TERMINAL REPLACEMENT (TWIN LOCK TYPE) [<>] Remove or Disconnect (Figure 18) Tool Required: J-22727 Terminal Remover 1. Connector lock tangs. [<>] Remove or Disconnect (Figure 10) 1. Terminal lock tang. [<>] Remove or Disconnect (Figure 19) METRI-PACK CONNECTOR REPLACEMENT 2. Terminal lock tangs. [<>] Remove or Disconnect (Figure 19) 3. Terminal [><] Install or Connect 1. Pry out the tangs 2. Terminal into the connector. . Figure 18—Twin Lock Connector Terminal Tool Required J-35689-A Terminal Remover 1. Primary lock (121) by lifting. 2. Connector Body (1ST). 3. Connector seat (120) by pulling the seal back onto the wires away from the connector body (137). WIRING DIAGRAMS 13 WIRING DIAGRAMS 14 90. Jacket 91. Twisted Wires 92. Splice Clip 93. Crimp and Solder 94. Electrical Tape Wrap 95,. Outer Electrical Tape Wrap. B-06230 Figure 20 Twisted Wire Repair 4. Terminal (138) by inserting J-35689 (139) into the connector body (137) to depress the locking tang (138), then push the wire and terminal through the connector body (figure 20). • Snip off the old terminal unless the terminal is to be reused, reshape the locking tang. 5. 5mm (0.2-inch) of the wire insulation (130). 100. 101. 102. 103. 104. 105. 106. Jacket Aluminum/Mylar Tape Drain Wire Splice Clip Crimp and Solder Electrical Tape Wrap Drain Wire Splice Clip, Crimped And Soldered. 107. Outer Electrical Tape Wrap. B-06231 Figure 21 —Twisted/Shielded Wire Repair * Terminal cavity of the connector body. [><] Install or Connect (Figure 19) 1. Terminal (136) on the wire. • Crimp and solder the terminal. 2. Terminal (136) into the connector cavity by pulling the wire on the seal side of the connector until the locking tang (138) is fully seated. 3. Seal (120) by pressing the seal into the connector body (137) until it is fully seated. 4. Connector until the primary lock (121) engages. VIEW B 120. 121. 122. 123. 124. 125. 128. 127. 128. 129. Connector Seal Primary Lock Secondary Lock Staple Secondary Lock terminal Barrel Secondary Lock Lock Opened Lock Opened J-28742 Terrninal Remover Wire 130. 5 mm (0.2 inch) 131. 132. 133. 134. 136. 137. 138. 139. Terminal Roll Crimp Roll Crimp Terminal Insulator Metri-Pack Series 150 Female Terminal Connector Body Locking Tang J-35689 Terminal Remover WIRING REPAIR The wire repair is very important for the continued reliable operation of the vehicle. This repair must be done as described in the following procedures. Twisted Wires (Figure 20) F-02349 Figure 19—Weather-Pack and Metri-Pack Connectors [<>] Remove or Disconnect 1. Jacket (30). 2. Twisted wires (91). 3. Insulation from the wire. [><] Install or Connect 1. Splice clip (93). • Crimp. • Solder. 2. Electrical tape wrap (94) on wires. 3. Outer electrical tape wrap (95). Twisted Wires/Shielded Cable (Figure 21) [<>] Remove or Disconnect 1. 2. 3. A. 5, Jacket (100). Unwrap aluminum/mylar tape (101). Drain wire (102). Leads. Insulation on the leads. [><] Install or Connect 1. Splice clips (103). 2. Crimp and solder the splice clips (104). 3. Electrical tape (105) on the splices. WIRING DIAGRAMS 15 4. Aluminum/mylar tape by wrapping and taping. 5. Drain wire with a splice clip (106). Crimp and solder the splice clip. 6. Outer jacket electrical tape wrap (107). SPECIAL TOOLS 1 Weather-Pack II Terminal Remover 2. Electrical Terminal Remover 3. Windshield Antenna Tester 1989 R/V TRUCK PAGE 2 3-4 5 6 7-8 9-10 11 12-14 15 16-17 18 19 20 21 22-23 24 25 26 27-28 29-30 31 32 33-34 35-37 38-39 40-41 42 DESCRIPTION FUSE BLOCK DETAIL POWER DISTRIBUTION (GASOLINE) POWER DISTRIBUTION (DIESEL) AUXILIARY BATTERY (TP2) HEADLAMPS & PARKING LAMPS MARKER LAMPS ROOF MARKER LAMPS HAZARD LAMPS HORN DIRECTIONAL LAMPS START (8 CYL.) I..25, (8 CYL,) LE8, LT9 START (8 CYL.) LO5, L19 START (DIESEL) LL4, LH5 IGNITION (6 CYL.) L25 IGNITION (8 CYL.) LE8, LT9 IGNITION (8 CYL.) LO5, LT9 THROTTLE BODY INJECTION HOT FUEL HANDLING GLOW PLUGS (DIESEL) ENGINE CONTROLS (DIESEL) FUEL CONTROL & IDLE AIR CONTROL (8 CYL„) LO5, L19 AUXILIARY COOLANT FAN AUXILIARY FUEL TANK (NL2)/FUEL TANK SELECTOR SWITCH EMISSION CONTROLS ELECTRONIC CONTROL MODULE (ECM)-INPUTS (8 CYL.) LO5, L19 ELECTRONIC CONTROL MODULE (ECM)-OUTPUTS (8 CYL.) LO5, L19 ECM CHART (8 CYL.) PAGE 43 44-45 46 47 48 49 50 51 52 53 54-55 56-57 58 59 60 61 62 63 64 65 66-67 68 69 70-71 72 73 74-76 77-80 81-84 85 DESCRIPTION ECM CHART (DIESEL) ELECTRONIC CONTROL MODULE (ECM)-OUTPUTS (DIESEL) ELECTRONIC CONTROL MODULE (ECM)-INPUTS (DIESEL) TRANSMISSION CONVERTER CLUTCH DETENT SOLENOID AUTOMATIC TRANSMISSION KICKDOWN SOLENOID (M40) AIR CONDITIONING (C60) REAR AIR CONDITIONING (C69) HEATER AUXILIARY HEATER (C36) INSTRUMENT PANEL LAMPS INSTRUMENT PANEL GAGES INDICATOR LAMPS SEAT BELT WARNING BUZZER BRAKE WARNING SYSTEM FOUR-WHEEL DRIVE INDICATOR LAMP CRUISE CONTROL (K34) DOME LAMPS CARGO LAMP (UF2) RADIO EQUIPMENT (UM6. UP8) RADIO EQUIPMENT (U63) POWER WINDOWS (A31) POWER REAR WINDOW (A33) REAR DEFOGGER (C49) POWER DOOR LOCKS WIPER/WASHER PULSE WIPER/WASHER (CD4) BACKUP LAMPS TAIL LAMPS LICENSE LAMPS CAMPER & TRAILER WIRING SECTION A - PAGE 1 0 R.H. SIDE MARKER LAMP HEADLAMP SWITCH R.H. SIDE MARKER LAMP 6294015 R.H. TAIL. STOP & DIRECTIONAL LAMP TO l/P ► CLUSTER CONN. 9 .8 BRN SPLICE 9 R.H. PARK LAMP BACKUP LAMP SHEET METAL GROUND SPLICE 150 E 3 ^ LICENSE LAMP J 24 18 19 9 D 1 SPLICE 150 BACKUP LAMP 150 .8 BLK 9 .8 BLK- SHEET METAL GROUND SPLICE 9 L.H. TAIL. STOP & DIRECTIONAL LAMP 6294015 0 L.H. SIDE MARKER LAMP R.H. SIDE MARKER LAMP REAR FRONT FUSE BLOCK MARKER LAMPS (UTILITY VEHICLE) SECTION A - PAGE 9 0 R.H. SIDE MARKER LAMP HEADLAMP SWITCH WIDESIDE PICK-UP (R05) ONLY 6294015 0 R.H. FRONT CLEARANCE LAMP 6294015 /^ "T \ U M i* U— U R.H. SIDE MARKER LAMP R.H . REAR CLE/ CLEARANCE iLAMP i 6294015 R.H. TAIL. STOP & DIRECTIONAL LAMP $ O O R.H. PARK LAMP 'lh © S § - L 150 .8 BLK ■ 1 SHEET n METAL L. GROUND L BACKUP LAMP SPLICE 1! U 931 i b 9 J L 2 419 350 : 30 o >l 0 1 93 J>| 91 31 130 35 97 92 3 z LICENSE LAMP(S) 1 20 1 : C T7 1202184 iih g > a - SHEET METAL GROUND L.H. TAIL. STOP & DIRECTIONAL LAMP E3 S) GS a B e OD S3 S) ffl S O IB (D 83 ffl 9 T/L CTSY 20 AMP 0 SECTION A - PAGE 10 6294015 IB O QD 0 Lr—u i-r-xj [g ][g ] 6294015 MARKER LAMPS FLEETSIDE (E63) WIDESIDE (R05) a L.H. SIDE MARKER LAMP L.H. FRONT CLEARANCE LAMP WIDESIDE PICK UP (R05 ONLY) REAR FRONT FUSE BLOCK L.H. REAR CLEARANCE LAMP 6294015 0 L.H. SIDE MARKER LAMP FROM R.H SIDE MARKER LAMP FROM RH FRONT & REAR CLEARANCE LAMPS (RPO R05 ONLY) 150 8 BLK 19 8 DK GRN 8911029 T R.H. TAIL STOP & DIRECTIONAL LAMP R.H. TAIL, STOP & DIRECTIONAL LAMP (PART OF RH TAIL. STOP, DIRECTIONAL. & BACK UP LAMP ASM) ^ FROM BACK UP LAMP FROM END GATE -< IDENTIFICATION LAMPS (RPO E63 ONLY) 6288424 2962509 6288712 (RPO E63 ONLY) LAMP ASM GROUND 19 .8 DK GRN -18 .8 YEL - RPO R05 ONLY 12015798 12016024 TO BULKHEAD CONNECTOR FOR REMAINDER OF CIRCUIT SEE HAZARD LAMPS 18 .8 YEL 19 8 DK GRN 24 19 9 ,H fr-r—i —i 1 2962509 6288712 (RPO E63 ONLY) FRAME GROUND jid lh ii 3 iJ 12020099 6288424 Q) LAMP ASM GROUND TO BULKHEAD CONNECTOR FOR REMAINDER OF CIRCUIT SEE HAZARD LAMPS FROM END GATE IDENTIFICATION LAMPS (RPO R05 ONLY) jiiih a 24, 19\ 1 ,18 IV---------- iJ FROM BACK UP LAMP L.H. TAIL STOP & DIRECTIONAL LAMP 150 .8 BLK .8 YEL I © ~ L.H. TAIL, STOP & DIRECTIONAL LAMP 12090099 FROM LH FRONT & REAR CLEARANCE LAMPS (RPO R05 ONLY) SECTION A - PAGE 14 03 & 43 W/O RPO E62, E63 STEP SIDE PICKUP-RPO E62 SPLICE 150 FROM L.H. SIDE MARKER LAMP (PART OF LH TAIL. STOP, DIRECTIONAL, & BACK-UP LAMP ASM) HAZARD LAMPS 18-.8 YEL 150.8 BLK FLEETSIDE PICKUP-RPO E63 WIDE SIDE PICKUP—RPO R05 8911029 SHEET METAL GROUND FRAME GROUND —f iS ^ ----- 1 51 3.0 BLK R.H. SIDE MARKER LAMP R.H. SIDE MARKER LAMP 12034372 R.H. HEADLAMP CONNECTOR m SHEET METAL GROUND E D na t z f e g g y 6294015 151 .8 BLK ISO 39 Ha 419 0 (5 TO l/P CLUSTER D 151 3.0 BLK Q ElnDD S C D SHEET METAL GROUND FRAME GROUND I hmJ 12066261 SPLICE 15 1 5 1 8 BLK R.H. PARK & DIRECTIONAL LAMP SPLICE 151 15 .5 DK BLU -14 .5 LT BLU- 15 .8 DK BLU R.H. HIGH BEAM HEADLAMP CONNECTOR SPLICE 151 .8 BLK „ / 8917280 R.H. PARK & DIRECTIONAL LAMP FROM AUXILIARY COOLING FAN (LE8. L19 & C60) 6288472 FROM AUXILIARY COOLING , FAN (LE8, L19 & C60) 15 .5 DK BLU 14 .5 LT BLU SHEET METAL GROUND 150 .8 BLK 150.8 BLK L.H HIGH BEAM HEADLAMP CONNECTOR 12020099 SPLICE L.H. PARK & DIRECTIONAL LAMP 150.8 BLK ----- 931 2 39 4 1 9 3 5 0 : 3 0 L 31 3 130 r 35 2 ; 93 97 91 92' < SPLICE 14 14 .8 LT BLU D] L.H. PARK & DIRECTIONAL LAMP 12020184 150 .8 BLK L.H HEADLAMP CONNECTOR —----------- -— — 6288471 6294015 L.H. SIDE MARKER LAMP DIRECTIONAL LAMPS SECTION A - PAGE 16 j* .. 1 39 yy i \ I U h » i 13 i It* i-S: 12020099 ... n r^ h fi.. £ 1 H --------------- --------------------- SHEET 150 .8 BLK GROUND FUSE BLOCK E ED G) (5 H ffl IE E « « (s s i a a ® e «oo e METAL FROM SIDE MARKER LAMP SPLICE 150 . i O 150 .8 BLK - G3 (3 (3 GB QD SD OB •A T T (OH ACC lf» R.H. TAIL, STOP & DIRECTIONAL LAM P PWA •MOW? «Hu£? fsA r 19 .8 DK GRN - 150 .8 BLK Iz S B z S 19 .8 DK GRN C3 REAR DIRECTIONAL FLASHER 8911029 (16) -38- 8 DK BLU- FROM BACK UP LAMP 16 .8 PPL 19 .8 DK GRN 19 .8 DK GRN SPLICE 19 .19 8 DK GRN 18 .8 YEL 12015024 (STEERING COL SWITCHES) FROM BACK-UP LAMP L.H. TAIL STOP & DIRECTIONAL LAM P 12015798 19-.8 DK GRN 18 .8 YEL ---16 .8 PPL ----- 150-.8 BLK 18-.8 YEL 15 .5 DK BLU 14 .5 LT BLU - 150-.8 BLK L 18 .8 YEL 12004147 8911035 (06) DIRECTIONAL SIGNAL SW FROM SIDE MARKER LAMP SPLICE 150 .8 BLK SHEET METAL GROUND 12004148 DIRECTIONAL LAMPS (16, 06 MODELS) SECTION A - PAGE 17 30 2 <£ §1 2 30 zm |> 3 C H m O mI 2 .8 BLK/RED 2-2.0 RED THERMO HW FUSIBLE LINK 19 BLK■6-3.0 PPL-33 .5 TAN/WHT- STARTER MOTOR SOLENOID d d io O S m p D EC 17^—--- TO PARK BRAKE WARNING IS UJ fs Q□ S3 8911698 SW. JUNCTION BLOCK Q D fa BuQ H l o S 0 •• H B nU n ii| r *Q'' q d # —2 .8 RED' SPLICE I $ o o 2 l/P CLUSTER CONN. Ue e i 8900371 ENGINE 5 z o soc l/P AUTO TRANS. ONLY & Si I 2 |440|420| I 39 |806|439| rLivc 2 £ SPLICE Il 20| I III f 3 | 31| [~4M| 2 51 Ivw 130-.22 BRN/WHT »3 l f t * 1**191ill [4 2 2 | 97 | 2-3.0 RED- SPLICE 2 12062316 Y 3 (§ > 2-1.0 RED FUSIBLE LINK' H M fs: sb ^ - MANUAL TRANS ONLY GRD 1 Q D j GRD 2 P T 1 2 3.0 RED— I ! 12010966 TO HD. LP. SW. 2-1.0 RED— SPLICE 2 6294641 •33- 5 TAN/WHT------------ 25-1.0 BRN8917548 HE m J O <0 « •2-1.0 RED■6 3 0 PPL- CLUTCH ■? ; ■ START [ J R SWITCH T T ^ ST AR1 RUN OFF LOCK ACC (MAN. ONLY) GENERATOR 03 03 OS H (S ID QD *■** G3 GD ffl H QD 03 DD woo ■19 BLK- ■ATT .8 BLK' BATTERY TO ECM n IQ BD 09 GS OD (0 CD -19 BLK- «O l < ION r»—£3 o — «~i SHUNT tHUMT U—IJ lu—u r-t_ n r*—-n SHEET METAL GROUND LM] US ENGINE GROUND <0 00 I I o START GAS (L05, L19) SECTION A - PAGE 19 15 .8 BLK TO A/C COMP l/P CLUSTER CONN. IGNITION L 2 5 - V 6 FUSE BLOCK SECTION A - PAGE 21 ELECTRONIC CONTROL MODULE CONNECTORS 9SI Y G E N E R A TO R mr----1— p " ' ♦ ---l I----------- \/F|---- -—|1 I . >----- h -j| • m m m IGNITION LE8, L T 9 - V 8 SECTION A - PAGE 22 CONVENIENCE CENTER TO BRAKE SWITCH (MD8 ONLY) l/P CLUSTER CONN. IGNITION L 0 5 , L 1 9 - V 8 FUSE BLOCK REAR SECTION A - PAGE 23 l/P CLUSTER CONN. TO GENERATOR IGNITION L 05 , L19 - V 8 SECTION A - PAGE 24 FUSE BLOCK REAR OXYGEN SENSOR 439 .8 PNK/BLK 412-.8 PPL THROTTLE POSITION SENSOR TO COOLANT TEMP SENSOR SPLICE 452 452 A 452 .8 BLK / 412 .8 PPL ______ 452 .8 BLK ELECTRONIC CONTROL MODULE CONNECTORS 417 .8 DK BLU 417-.8 DK BLU |»5l| 1 l«M| 2 f*3«1 □ » |5 ] [«3] 4 [443] • 416 .8 GRA — 416 .8 GRA 467 .8 LT BLU 468 .8 LT GRN 439 .8 PNK/BLK f TO EVRV SOL. TO AIR SOL. (L05 HD ONLY) INJECTOR 1 □ □ □ • [E l 10ESI „(« 2 j « □ i 3 [7 3 □ " □ E 5 3 ieQ51 TO AIR SOL. TO EGR SOL. (L05 LD ONLY) 467 .8 LT BLU EH1 ?E 3 12045575 417-.8 DK BLU 481 .8 RED 416-.8 GRA SPLICE 439, 481, 482 •439 .8 PNK/BLK • m HTK TO HALF FUNCT. ESC E) Bl O H IB IB OB « « e . 468 .8 LT GRN BQ G) (5 H (9 OB E 482 .8 WHT l/P SHUNT SHUNT n s jf i R ENGINE < "°° O l 03 SI (5 OS 9) IB QQ m tt io n acc in mm n —-n r«—n oa] rsaI p^n r g iiM 1 ----------------- FwiUwrbb [ 3 8 |80 e i4 3 » 120 In IQ REAR FRONT FUSE BLOCK l*isL"Jj= r 21 3s 11 422£9jjlT ] «T»2 v TO VSS 91 8917253 12020184 a THROTTLE BODY INJECTION L 0 5 /L 1 9 ONLY SECTION A - PAGE 25 HOT FUEL HANDLING HOT FUEL HANDLING L 0 5 /L 1 9 —V8 SECTION A - PAGE 26 FRAME GROUND AUX FAN COOLING SW SHEET METAL GROUND FROM RH HEADLAMP(S) PARK & DIR SIGNAL > LAMPS ) 151 3.0 BLK 702 2.0 BLK/RED< •935 .8 DK GRN — |9 3 5 Y 39 .8 PNK/BLK — \ 2 j AUXILIARY COOLING FAN RELAY -2 -2 .0 RED------- 12010015 12020184 L19 l/P 702-2.0 BLK/RED151 2.0 BLK---12015792 G UZD AUXILIARY COOLING FAN TO CHECK ENGINE LAMP HOT AT ALL TIMES 39 .8 PNK/BLK TO l/P CLUSTER CONNECTOR SPLICE 2 12020184 JUNCTION BLOCK AUXILIARY COOLANT FAN L19/LE8 & C 60 SECTION A - PAGE 32 -*k- LE8 RIGHT-HAND AIR DIVERT SOLENOID 150.8 BLK- O] REAR SIDE ENGINE GROUND SPLICE 39 900 .8 YEL39 .8 PIMK/BLK. l/P 39 .8 PNK/BLK - ENGINE SPLICE 900 n— ,rmI [ R 5I l I5 9 1 900 .8 YEL Q 39 .8 PNK/BLKAIR DIVERT SOLENOID AIR CONTROLLER 12040753 ( 3 0 | 1 31 l f 2 6 l l 3 6 H 9 7 l f 9 T | 39 IGNITION SWITCH 150 GROUND TACHOMETER TO COIL CHECK ENGINE LAMP AIR SWITCH SOLENOID 121 39 .8 PNK/BLK- 419 436 B IZ D G J J SPLICE 39 - 150 .8 BLK — 8917253 a •419-.8 BRN/WHT 8917232 -419 .8 BRN/WHT- ^ 4 ^ 12040947 DISTRIBUTOR CONNECTOR 0 II 1 121 .8 WHT - 8911979 AIR CLEANER TEMP SWITCH 6294828 LEFT-HAND AIR DIVERT SOLENOID 6288186 FRONT FUSE BLOCK REAR 900-.8 YEL39 .8 PNK/BLK - ANTI­ DIESEL SOLENOID (MAN TRANS ONLY) 8911256 EMISSION CONTROLS - L T 9 SECTION A - PAGE 35 RIGHT-HAND AIR DIVERT SOLENOID ENGINE GROUND ENGINE TO 4 GRD STRAP- O l BODY GRD 936 .8 YEL► TO “ SERVICE ENGINE SOON’ LAMP 39 .8 PNK/BLK. 39 .8 PNK/BLK SPLICE 936 a AIR DIVERT SOLENOID AIR CONTROLLER 936 .8 YEL- 12040753 IGNITION SWITCH GROUND TACHOMETER TO COIL CHECK ENGINE LAMP AIR SWITCH SOLENOID 39 150 121 39 .8 PNK/BLK- 419 436 _ 150 .8 BLK — SPLICE 39 a 419 .8 BRN/WHT 419 .8 BRN/WHT 12040947 DISTRIBUTOR CONNECTOR 39-.8 PNK/BLK HtH U— 121 .8 WHT - 8911979 0 0 0 0 B ! ] GO [3 (3 0 0 OH SD H) (3 0 0 0 ® H) ” AIR CLEANER TEMP SWITCH BATT n —n IGN r~i—r i ACC LPS 0 m ^ TO “ SERVICE ENGINE SOON” LAMP I [4 3 6 } | 936[ 39 .8 PNK/BLK 6294828 K l CM] ds ca 6288186 ECMI CHOKE CWAWK FRONT 39 ( 12015987 EMISSION CONTROLS —L25 SECTION A - PAGE 36 -39 .8 PNK/BLK- K *l a i i r REAR FUSE BLOCK IDLE STOP SOLENOID E S o ) SPLICE 39 436 RIGHT HAND AIR DIVERT SOLENOID ) ENGINE GROUND ENGINE TO BODY GROUND -4-GRD STRAP. -436 .8 BRN■900 .8 YEL12015792 IIP -39 .8 PNK/BLK- AIR DIVERTER SYSTEM RELAY DIRECT GROUND 150 419-.8 BRN/WHT. 919 900-.8 YEL-------- — r 900 419 CHECK ENGINE IGNITION SWITCH TO “ SERVICE ENGINE SOON’ LAMP tS .id — |93«1 I 2 I (350 4.191 3 94. > 39 lo l i u 3’ i 1— iv y I I *»l I 2 |3 5 l 39 .8 PNK/BLK ■ 39 .8 PNK/BLK. I 3 12010015 Ilf I ,| • “ ?l | 92 | 91 | iv w «= 12020183 12020184 IGNITION L-419-.8 BRN/WHT DIRECT GROUND AIR DIVERTER MODULE TACHOMETER TO COIL AIR SWITCH SOLENOID SPLICE. 436 12040947 DISTRIBUTOR CONNECTOR s to 1 SPLICE 39 121-.8 WHT- - 8911979 AIR CLEANER TEMPERATURE SWITCH 39 39 .8 PNK/BLK 900 900-.8 YEL----- 39 .8 PNK/BLK 6288186 ¥ 436 LEFT HAND AIR DIVERT SOLENOID 8911256 ■436-.8 BRN 900 .8 YEL12015792 900 ) ANTI­ DIESEL SOLENOID MAN TRANS ONLY EMISSION CONTROLS—LE8 SECTION A - PAGE 37 MANIFOLD ABSOLUTE PRESSURE SENSOR THROTTLE POSITION SENSOR -439 .8 PNK/BLK 452-.8 BLK -440-1.0 ORN- 417 .8 DK BLU 416 .8 GRA — 455 .8 BLK ---- -455- 8 BLK ----- 432 .8 LT GRN -432 .8 LT GRN 417- 8 DK BLU -417-.8 DK BLU- 416-.8 GRA — -416 .8 GRA---- 410 .8 YEL -410-.8 YEL- 452 .8 BLK -452 .8 BLK ' 485 .8 BLK -485 .8 BLK ■ 412-.8 PPL ■ ■412-.8 PPL- SPLICE 416 COOLANT TEMP SENSOR 410 .8 YEL D: 452 .8 BLK !ZZ!" Riga, SPLICE 452 120407S3 -486 .8 BLK/RED 496 1.0 DK BLU E.S.C. SENSOR -► TO INJ1 L05 ONLY TO INJ2 439 485 439 .8 PNK/BLK TO A.I.R.tLD L05) E.S.C. GROUND 486 485 .8 BLK ------ TO A.I.R. (HD L05) E.S.C. SEN INPUT 496 12V IGN.FUSED SPARK RETARD 486- 8 BLK/RED l/P ENGINE 496-1.0 DK BLU 5 c u 12015982 1 E.S.C. HYBRID FUNCTION 94 29 9 39 15 14 33 12 J 99 11 T IZ D y K H Z D 412-.8 PPL OXYGEN SENSOR 12015791 ELECTRONIC CONTROL M ODULE-INPUTS L05, L19-V 8 SECTION A - PAGE 38 130 : 19 120 * S : 24 30 19 12020183 12020184 422 -439 .8 PNK/BLK -439-.8 PNK/BLK 439 .8 PNK/BLK ELECTRONIC CONTROL M O DULE-INPUTS L0 5 , L 1 9 - V 8 SECTION A - PAGE 39 ELECTRONIC SPARK TIMING E.V.R.V. FOR L05 W/H.D & L19 ENGINE ONLY AIR SWITCH ELECTRONIC CONTROL MODULE L05, L19-V 8 SECTION A - PAGE 40 TO ECM ELECTRONIC CONTROL M O D U L E -O U T P U T S L 0 5 , L 1 9 -V 8 SECTION A - PAGE 41 CIRCUIT WIRE NO. SIZE 465 * • .8 COLOR CAVITY DESCRIPTION DK GRN/WHT A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 FUEL PUMP RELAY DRIVE NOT USED NOT USED EGR SOLENOID SYSTEM CHECK LAMP 1 2V IGNITION FUSED TORQUE CONVERTER CLUTCH SERIAL D ATA ASS Y LINE DIAG./LINK SPEED SENSOR 5 V RETURN B SYSTEM RETURN B1 B2 B3 B4 B5 B6 B7 B8 B9 B 10 B11 B 12 12V BATTERY FUSED ELEC FUEL PUMP FUSED FEED DISTRIBUTOR REF LOW NOT USED DISTRIBUTOR REF HIGH NOT USED SPARK RETARD CONTROL AIR CONDITION NOT USED PARK/NEUTRAL SWITCH NOT USED NOT USED 435 419 439 422 461 451 437 452 450 .8 .8 .8 .8 .8 .8 .8 .8 .8 GRA BRN/WHT PNK/BLK TAN/BLK ORN W H T/BLK BRN BLK BLK/W HT 440 120 453 .8 .8 .8 ORN TA N /W H T BLK/RED 430 .8 PPL/WHT 485 59 .8 .8 * 434 * • AUTO TRANS ONLY L 0 5 ONLY .5 BLK DK GRN ORN/BLK ELECTRONIC CONTROL MODULE L 0 5 , L 1 9 - V 8 TBI SECTION A - PAGE 42 CIRCUIT WIRE SIZE NO. * • COLOR 436 444 443 441 442 446 .8 .8 .8 .8 .8 .8 BRN LT GRN/BLK LT GRN/WHT LT BLU/W HT LT BLU/BLK LT BLU 806 410 432 .8 .8 .8 PPL/WHT YEL LT GRN 417 416 .8 .8 DK BLU GRA 440 .8 ORN 551 455 .8 .8 T A N /W H T PPL 423 424 413 412 .8 .8 .8 .8 W HT TAN/BLK TAN PPL 468 .8 LT GRN 467 .8 LT BLU * AUTO TRANS ONLY • L 0 5 ONLY CAVITY DESCRIPTION C8 C9 C IO C11 C12 C 13 C14 C15 C 16 NOT USED AIR SWITCH SOLENOID STEPPER COIL B LOW STEPPER COIL B HIGH STEPPER COIL A HIGH STEPPER COIL A LOW A/C CONTROL (4TH GEAR DISCRETE) NOT USED CRANK DISCRETE FUSED COOLANT TEMPERATURE MANIFOLD ABSOLUTE PRESS. NOT USED THROTTLE POSITION SENSOR 5V SENSOR REFERENCE NOT USED 12V BATTERY FUSED D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D 11 D12 D13 D14 D15 D16 SYSTEM GROUND 5V RETURN A NOT USED HEI SPARK TIMING HEI BYPASS OXYGEN SENSOR LOW OXYGEN SENSOR HIGH NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED INJECTOR B DRIVE NOT USED INJECTOR A DRIVE C1 C2 C3 C4 C5 C6 C7 CIRCUIT WIRE SIZE NO. 432 417 410 .8 .8 .8 COLOR CAVITY DESCRIPTION LT GRN DK BLU YEL A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A 11 A12 M ANIFO LD ABSOLUTE PRESS THROTTLE POSITION SW ITCH CO O LANT TEMP. SENSOR NOT USED NOT USED ASS Y LINE DIAG./LINK NOT USED ENGINE SPEED SENSOR VEHICLE SPEED SENSOR ASS Y LINE DIAG./LINK NOT USED THROTTLE POSITION SW ITCH & M ANIFO LD ABSOLUTE PRESS. B1 B2 B3 B4 B5 B6 B7 B8 B9 B 10 B11 B1 2 NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT 451 .8 W H T/BLK 121 437 488 .8 .8 .8 W HT BRN LT GRN 416 .8 GRA CIRCUIT WIRE NO. SIZE COLOR 452 150 .8 .8 BLK BLK *4 2 2 905 .8 .8 TAN/BLK BRN USED USED USED USED USED USED USED USED USED USED USED USED 435 902 538 .5 .8 .8 GRA LT BLU DK GRN 439 .8 PNK/BLK 440 .8 ORN DESCRIPTION CAVITY C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 SYSTEM RETURN SYSTEM GROUND NOT USED NOT USED TORQUE CONVERTER CLUTCH COLD A D VAN C E/G LO W PLUG INHIBIT RELAY NOT USED NOT USED NOT USED EGR DIAGNOSTIC CONNECTOR EGR SOLENOID EPR SOLENOID NOT USED 1 2 V IGNITION FUSED NOT USED 1 2 V BATTERY FUSED D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT NOT C1 C2 C3 C4 C5 C6 USED USED USED USED USED USED USED USED USED USED USED USED USED USED USED USED * AU TO TRANS ONLY ELECTRONIC CONTROL MODULE LH6 -D IE S E L SECTION A - PAGE 43 ■422- 8 TAN/BLK • ■446- 8 LT BLU — STOP LAMP SWITCH (MD8 ONLY) TRANSMISSION CONVERTER CLUTCH SOLENOID ELECTRONIC CONTROL MODULE CONNECTORS ■OPENS IN 4TH GEAR CLOSES WITH INC. TEMP. . 12047948 12010649 12010503 422 TO INST. CLUSTER SPLICE 422 E D CN Ol (0 n TO HOT FUEL HANDLING MODULE TO KICK DOWN SOL. (M40 ONLY) C B A "LO <0 CO to II) * r 3 — G l/P H J K ^ L M 12020043 TO CONN. CENTER 12045675 A.L.D.L. ENGINE V I 2 *o| |3 5 0 |4 1 9 | 3 9 1 I____ Lao | III LLL?»I I I 251 I 2 |35| I l422| oTl X m y/ O •420 .8 PPL- n 9 7 f 93 | CD 91 | 3> I « l» *l TO l/P CONN. r '■ HOT IN START AND RUN ■422- 8 TAN/BLK.F I -422 .8 TAN/BLK12020184 12020183 K l FRONT REAR FUSE BLOCK o) TRANSM ISSIO N CONVERTER CLUTCH DETENT SOLENOID (L 0 5 ONLY) SECTION A - PAGE 47 422 .8 TAN/BLK- TRANSMISSION KICKDOWN SOLENOID >422 .8 TAN/BLK TO ECM L05 ONLY L05/L19 ONLY SPLICE 422 ENGINE 55 .8 ORN- 422 .8 TAN/BLK J 422 .8 TAN/BLK 2984092 L19 ONLY ----------39 .8 PNK/BLK £ J 4 2 2 j 39 12047782 j\ -— n _ . . n 12047781 [j 55 j422| 39 “ 5 |J TO FUEL HEATER TO COLD ADVANCE & FAST IDLE TEMP SWITCH TO WATER IN FUEL SENSOR KICKDOWN RELAY L05/L19 ONLY LL4 ONLY SPLICE 39 TO HOT FUEL HANDLING MODULE (IF EQUIPPED) LL4 DIESEL ONLY 39 .8 PNK/BLK- m SI IS (9 G9 QQ IS) QD *•** El 03 G9 H B) (H E KICKDOWN SWITCH ___________________ q is si mtt LL4 DIESEL ONLY n —n SHUNT q T~b i him r»—o SHUNT < \ _ (B (B IE 1 «cc ip« nm p— | SA TRANSMISSION KICKDOWN SOLENOID FOR L I4 DIESEL ONLY 12052641 E 3 gzg o) LL4 ONLY L REAR 55 .8 ORN- FUSE BLOCK d <*> > 2984092 TRANSMISSION KICKDOWN SOLENOID i : 550 KICKDOWN SWITCH FOR LE8, LT9 ONLY □ HOT IN START AND RUN FOR LE8, LT8 ONLY 2977647 | 55 |[ 139 | LE8, LT9 ONLY I / ----- s------ 55 .8 ORN 2984092 AUTOMATIC TRANSMISSION KICKDOWN SOLENOID (M 40) SECTION A - PAGE 48 55 .8 ORN 8900420 l L, 2977253 GROMMET 8911781 LE8, LT9 ONLY ■—139-.8 PNK/BLK J HOT IN START AND RUN GROUND BLOWER SWITCH DIODE (NOT USED WITH LE8, LT9, L25I ‘ 899 .5 CAPAC JUNCTION BLOCK AIR CONDITIONING (RPO C60) SECTION A - PAGE 49 BLOWER SWITCH 12004101 52-5.0 ORN •51-1.0 YEL- L ■52-2.0 ORN- E S S l SPLICE 52 2977940 RESISTOR \l 2977253 8900420 2977518 GROMMET 8911215 GROUND HT* EH ff) S) (3 B (9 IB ID ««*■ (3 d (5 B QD 08 OD *° is is a a ai os is •ATT IQN S M jN ? SHUN? ACC IH 09 12004740 O MM i-r—«j u —vj Of AUX HTR A/C 25 AMP E 9 153 b FUSE BLOCK REAR AIR CONDITIONING (RPO C 69) SECTION A - PAGE 50 HEAR o) REAR BLOWER MOTOR RESISTOR BLOWER MOTOR m I M a H U tell 2965019 l l T 2977976 GROMMET 8911217 sffil □ 52 r 1 so l 3 ■or 12004067 -5 2 -2 .0 ORN■51-2.0 YEL— -5 2 -2 .0 ORN•72-2.0 LT BLU- 51-2.0 YEL■52-2.0 ORN-----— 72-2.0 LT BLU 50-2.0 BRN 50-2.0 BRN 12015952 12015987 HOT IN RUN —I o o HEATER SECTION A - PAGE 51 BLOWER SWITCH 51-2.0 YEL IU 952 -952-2.0 DK GRNB a 8905790 GROMMET GROMMET 12004752 12015958 RESISTOR 1501 12004267 HOT IN RUN \rL BLOWER MOTOR AUXILIARY HEATER (RPO C36) SECTION A - PAGE 52 ILLUM ILLUM ILLUM ILLUM ILLUM l/P CIRC U IT RO UTIN G W IT H T A C H O M E TE R HEATER A/C CONTROL ASSEMBLY W /O W /O - l/P CIRC U IT RO UTIN G W IT H O U T T A C H O M E TE R BRAKE FROM SEAT BELT RETRACTOR SWITCH FROM CONV. CENTER FROM VSS (L05, L19, LH6) SPLICE 150 00 o BUS BAR E GROUND FUSE BLOCK REAR INSTRUMENT PANEL LAMPS SECTION A - PAGE 53 2962965 COOLANT TEMP SENDER L25 COOLANT TEMP SENDER L05, L19. LT9,LE8, LH6,LL4 TO HOT FUEL HANDLING MODULE (L05. L19) TO CONVENIENCE CENTER ^ OIL PRESSURE SENDER L05 OIL PRESSURE SENDER L19. L25, LE8, LH6, LL4 FUEL TANK SENDER L25.LE8, LH6 & LL4 TO AUTO TRANS KICKDOWN TRANS KICKDOWN SOLENOID (M40) INSTRUMENT PANEL GAGES SECTION A - PAGE 54 TO BRAKE SWITCH (MD8) ILLUM 0 ILLUM 0 ILLUM W/0 0 ILLUM 0 ILLUM 0 l/P CIRCUIT ROUTING WITH TACHOMETER W /O-l/P CIRCUIT ROUTING WITHOUT TACHOMETER FROM W/S WIPER WASHER SW V C 120 ) ■120-1.0 TAN/WHT- ELECTRIC FUEL PUMP FUEL GAGE SENDING UNIT -30 .8 PNK----------12059473 L05/L19 BLU OR PPL OR LT. GRN INSTRUMENT PANEL GAGES SECTION A - PAGE 55 TO GLOW PLUG RELAY & . CONTROLLER----- INDICATOR LAMPS SECTION A - PAGE 56 TO AUTO TRANS KICKDOWN SOLENOID (M40) l/P CIRCUIT ROUTING WITH TACHOMETER W /O-l/P CIRCUIT ROUTING WITHOUT TACHOMETER 1 1 1 1 11 1 1 1 1 1 J ---- 419 .8 BRN/WHT 33- 5 TAN/WHT 33 .5 TAN/WHT 8917693 L1J Si;i j \ A1 ! I 11 1’ ^ 1 0 3 <-TJ IE ! 10 I IGNITION SWITCH * INDICATOR LAM PS SECTION A - PAGE 57 ■39 .8 PIMK/BLK DIESEL ONLY FROM W/S WIPER WASHER SW FRONT SEAT BELT W ARNING BUZZER SECTION D -P A G E 6 4 SECTION A - PAGE 58 FUSE BLOCK REAR f& l 1^1 Q D ncm c z jn ia [isojDq ?] l/P CLUSTER CONN. □ElnEill ODD □E U I 233 n n d l □ 0 QDllEH] 8900371 -3 3 .5 TAN/WHT- l/P I |3 0 0 | IGN BAT 3 m ____ GRD 1 o n : GRD 1 1 3 3 6294641 12010966 ST A M I RUN OH 1OCK A(.C 12020184 IGNITION SWITCH 33 .8 TAN/WHT- 6288585 12004635 PARK BRAKE WARNING SWITCH D a 12004635 i BRAKE PRESSURE WARNING SWITCH 12004267 BRAKE W ARNING SYSTEM SECTION A - PAGE 59 •141-.8 BRN/WHT 4-WD INDICATOR LAMP 141-.8 BRN/WHT- 6294974 CC O O K l -1 5 0 .8 BLK—150 .8 BLK- BUS FRONT D A D GROUND TRANSFER CASE SWITCH o) 150-.8 BLK n E 156 .8 WHT ■ 12004267 V 1 0 0 ,2 0 0 F FUSE BLOCK ill 1 m 4-WD SHIFT LEVER LAMP ■150 .8 BLK- ■ni >150 .8 BLK12004215 4-WD INDICATOR LAMP 141-.8 BRN/WHT QC O O 150 .8 BLK ■150-.8 BLK 156-.8 WHT ■156-.8 WHT 12015792 ( 156 ) 12015454 S ’! TRANSFER CASE SWITCH V 30 0 FOUR-WHEEL DRIVE INDICATOR LAMP SECTION A - PAGE 60 REAR FRONT GROUND FUSE BLOCK o) CRUISE CONTROL MODULE CRUISE VENT VALVE CRUISE CONTROL VAC SPEED SENSOR CRUISE SERVO CRUISE SERVO ELECTRONIC CRUISE GROUND BRAKE SW. CRUISE ENGAGER SW. CRUISE ENGAGER SW. CRUISE CONTROL ACTIVATOR 84- —O O— S/C 8 3 - —O O-H ► R/A 397ON/OFF VEHICLE SPEED SENSOR CONTACTS CLOSED WITH FOOT PEDAL AT REST AUTOMATIC TRANS ONLY r — Lgu yQ — i 397 1 BRAKE SW 12034117 CRUISE CONTROL (RPO K34) W/O UD4 SECTION A - PAGE 61 RIGHT HAND DOOR JAMB SWITCH RIGHT REAR DOOR JAMB SWITCH 8911287 GROMMET 06 MODEL ONLY 156 6288872 REAR DOME LAMP (43. 06 & 03 MODELS) (06 MODEL ONLY) 156 .8 WHT FRONT DOME LAMP 2973324 TERM 2973324 TERM vijQQQQQs 40.1 ORN- 156-.8 WHT-40-.8 ORN- SPLICE 40 -4 0 .8 ORN156 .8 WHT 4— 156-.8 NAT- 8911353 TO REAR PANEL DOOR/END GATE HARNESS EXTENSION (06 MODELS) 6288544 (03, 06 MODELS) 12004333 (43 MODEL) 156 .8 WHT— — 40-1.0 ORN- TO KEY-IN WARNING BUZZER 12015958 GROMMET 12004628 HEADLAMP SWITCH DOME LAM PS SECTION A - PAGE 62 LEFT HAND DOOR JAMB SWITCH LEFT REAR DOOR JAMB SWITCH 06 MODEL ONLY 6288872 TO ROOF MARKER LPS (RPO 401) RADIO EQUIPMENT (RPO UM 6, UP8) SECTION A - PAGE 64 -9 .8 BRN 9 .8 BRN 2973384 FRONT SPEAKER 12004544 trd 12004543 1 RADIO RECEIVER ® @ IS ® GO 15 H ® I E *"° a s ® ® ! ] •G* ACC 0 O i.W% Kl C=3B^ FRONT FUSE BLOCK o REAR 150.8 BLK . m bus BAR GROUND RADIO EQUIPMENT (RPO U63) SECTION A - PAGE 65 12010366 12010366 GROMMET GROMMET (UK s p a n — 668-2.0 DK BLU I [ c ir c u it | ^BR EAKER “ .1 12004140 © I I 669-2.0 BRN- RIGHT REAR WINDOW MOTOR RIGHT REAR WINDOW SWITCH I [ c ir c u it *2JBREAKER 668-2.0 DK BLU• 7— [Q[J----- 12004140 669-2.0 BRN- IS £3 8 ° FUSE BLOCK LEFT REAR WINDOW MOTOR POWER WINDOWS (RPO A 3 1 ) 4-DOOR SECTION A - PAGE 67 ^ 5 9 - ------- 150 3 .0 BLK - t XFRAM E " GRN 15300002 BLAZER ONLY n 15300027 □ i i } ---- — 150-3.0 BLK DE}------ 1 15300027 CUT OUT SWITCH MOTOR BRK GRN 183 3.0 LT BLU- 60-3.0 ORN- O 60 3.0 ORN/BLK183 3.0 LT BLU- 15300032 2977976 8905425 12004480 SPLICE 183 U*3 GH} 15300002 183-3.0 LT BLU- 183-3.0 LT BLU---- 184-3.0 TAN — 184 3.0 TAN/WHT- < 15300027 2984855 > 12004727 I____ _ { ------------- { BLAZER ONLY 15300027 __ I } ) TAIL GATE WINDOW MOTOR — 15300002 TAIL GATE WINDOW SWITCH (FRONT) 183-3.0 LT BLU i SPLICE 184 < 184-3.0 TAN/WHT 6288909 J~l HL 184-3.0 TAN/WHT76-3.0 PNK 183-3.0 LT BLU- 2989902 H3" 12015162 8911781 TAIL GATE WINDOW SWITCH KEY OPERATED GROMMET U 12004884 183-3.0 LT BLU EJ El IB QQ OS) E El El (9 B III IS) E (3 El ffl ® E (0 12004883 ■ATT KM Sh u n ? shun? ACC SECTION A - PAGE 68 -60-3.0 ORN/BLK 184-3.0 TAN/WHT ^ L*t P sa FRONT POWER REAR WINDOW (RPO A 3 3 ) E "**" E FUSE BLOCK REAR  m i o z g C0 m CO o o "O 30 m 30 CD O G> m ■n O m > 3D 30 •150-1.0 BLK DOOR LOCK RELAY 2984378 12034343 ■295-1.0 GRA- o n ii I * ----ll 60 2.0 ORN/BLK- 60-2.0 ORN/BLK- 195-.8 LT BLU — -195 .8 LT BLU— 194-.8 BLK/WHT2977373 « RIGHT HAND DOOR LOCK MOTOR 194 .8 BLK/WHT- \r tJ * I [ c ir c u it *2 BREAKER 12004140 60-2.0 ORN/BLK — : ? 295 -------294-1.0 TAN POWER WINDOWS X a ■295 1.0 GRA■294-1.0 TAN- •294-1.0 TAN- 12 9 4 } 1 N. /TH1 ■295-1.0 GRA- 8911670 GROMMET UNLOCK RH DOOR LOCK SWITCH 12004155 -60 2.0 ORN/BLK - LOCK ■195-.8 LT BLU194 .8 BLK/WHT -60 2 .0 ORN/BLK - | | l 9 4 1| 1 9 5 1| 6 0 { HOT IN ACCSY. AND RUN CB>- c °—c » ■■<>C J- bC ^b SPLICE 60 o_a r j > - A 12015344 BEppp r r r POWER WINDOWS -------------- 60 2.0 ORN/BLK ■195 .8 LT BLU---■194-.8 BLK/WHT - L.H. DOOR LOCK SWITCH POWER WINDOWS 12004883 I 12045658 12004155 12015344 0 0 (S ffl H E B (E| IB E) E S B ffl IB (Ej 1j 1 S ■295-1.0 GRA 0 ( 3 f f lS lt B ( B [ lT O 12020397 294-1.0 TAN r v in n 3JJ -150-3.0 BLK £M3 K i M t a l -295-1.0 GRA■294-1.0 TAN- ca KH EK*! o. ° B C=3 S'S FRONT FUSE BLOCK 112951^294^11501 REAR 12015345 •60-2.0 ORN/BLK- 60-2.0 ORN/BLK 195 .8 LT BLU — 195-.8 LT BLU — ■194 .8 BLK/WHT- ■194-.8 BLK/WHT- LEFT HAND DOOR LOCK MOTOR ■295-1.0 GRA294-1.0 TAN- POWER WINDOWS BUS BAR GROUND POWER DOOR LOCKS (RPO A U 3 ) 2-DOOR SECTION A - PAGE 70 12004267 Virtl 8911670 GROMMET 12004140 £3q£5] 12015345 in II o 8911670 12015344 12010366 GROMMET GROMMET RIGHT FRONT DOOR LOCK ^ 7 -0 0 1 ---- 1 MOTOR ■295-1.0 GRA ■294-1.0 TAN 294 ru N CIRCUIT BREAKER XM1 295 295 1.0 GRA294-1.0 TAN- 1 [ c ir c u it 2 I BREAKER RIGHT REAR DOOR LOCK MOTOR 12004140 12004140 12034344 6:1 * = 7 -« 295 L ■195-.8 BK/WHT60 2.0 ORN/BLK■194.8 LT BLU — massi i MnJ UNLOCK <0II r* I c ^nlf o>II r> co * B ___ 12020397 12004267 PANEL REAR PANEL DOOR LOCK MOTOR 12004267 LOCK I 12015345 12047676 12004155 f f j[ t I A 12015344 RH DOOR LOCK SWITCH Ijo - C 3 > - b ©- A ° - C I ""W >- c a > -B = ■ > f— f c - A t _ * o 2984378 DOOR LOCK RELAY 12004883 TO FUSE BLOCK CAVITY E 2977373 LH DOOR LOCK SWITCH 12020398 12004155 12020397 12015345 /rui 12016344 12015344 194.8 LT BLU■60-2.0 ORN/BLK195-. 8 BLK/WHT- 5VS CIRCUIT BREAKER -295-1.0 GRA •294-1.0 TAN MH. 8911670 GROMMET 160 12004267 TO BUS BAR GROUND LEFT FRONT DOOR LOCK MOTOR [5VBI PUN LEFT REAR DOOR LOCK MOTOR 295-1.0 GRA■294-1.0 TAN12004140 12004140 12010366 GROMMET POWER DOOR LOCKS (RPO AU3) 4-DOOR SECTION A - PAGE 71 HTA E (SI IS ffl H IB OH (B j*** BD IS IS B QD OS E (S (S s i s i i i i i WINDSHIELD WIPER MOTOR •ATT io n CiuN? SHUN? acc in 0 o>s 150-.8 BLK- mm fs A tS J is L ^20*] HEaI gatJmSu . . . . . . [" i 5a " iCofr JJ\ HOT IN ACCSY. START AND RUN Q s a u i& i G^] [MI (s a wWIWW (CM I ***“ Its 6 3 CNOKI FRONT BUS BAR GROUND C=3 frS REAR FUSE BLOCK 93 .8 WHT93 .8 WHT WIPER, WASHER SW. (COLUMN MOUNTED) 94 150 92 3 j 91-.8 GRA- 91 SI COWL 150 .8 BLK 12020492 TO INST. CLUSTER CONN SPLICE 150 TO CONN. CENTER -< TO RADIO TO A/C HEATER LP TO SEAT BLT SW WIPER/WASHER SECTION A - PAGE 72 © © ® 0 E GD E © © S B ® ® ® WOO © 150 .8 BLK* a s © ® ® © •ATT SHUNT SHUNT ~m Q 3 t M J JAOXMMTULA«CESTOP MHA2] r2oP T I CTSY PoT I uyV 25A | GAUGC KH.I HTW A C | 15A bus BAR GROUND lAOtO rU m tU t fwhwoo [^3 K I CCMI CHOM FRONT PULSE, WIPER, WASHER SW (COLUMN MOUNTED) TO SEAT BLT SW PULSE WIPER/WASHER RPO CD4 SECTION A - PAGE 73 SHEET METAL GROUND 2973407 TRANSMISSION BACKUP LAMP SWITCH 150.8 BLK- (AUTO TRANS) ONLY SPLICE 150 -eCgHi' FROM RIGHT HAND TAIL. STOP. DIRECTIONAL ft SIDE MARKER LAMPS 2973431 MANUAL ONLY r RIGHT HAND BACKUP LAMP .8 LT GRN - 75 .8 DK BLU 24 .8 LT GRN-24 .8 LT GRNft L 9 19 ’•ibi 12020099 -24 .8 LT GRN MANUAL ONLY 12020184 LEFT HAND BACKUP LAMP 8911027 (16) 8911028 (06) BACK-UP LAMP SWITCH 4-SPEED MAN. ONLY 24 5 D UJ 2S — UJ AC FROM LEFT HAND TAIL. STOP. DIRECTIONAL ft SIDE MARKER LAMPS / ' “N m l SPLICE 150 --------24 .8 LT GRN-------- 75 .8 DK BLU------- ( 75 12015792 BACK-UP LAMPS-UTILITY, SUBURBAN SECTION A - PAGE 74 6294468 2977373 MANUAL ONLY 8911781 GROMMET 150-.8 BLK , SHEET METAL 11 GROUND BACKUP LAMP (PART OF RH TAIL. STOP AND DIR LAMP ASM) -24 .8 LT GRN PART OF LAMP ASM LAMP ASM GROUND 6288585 24 .8 LT GRN24 .8 LT GRN ■ FRAME GROUND TO BULKHEAD CONNECTOR FOR REMAINDER OF CIRCUIT SEE BACK-UP LAMPSUTILITY, SUBURBAN MODELS 12015798 6288585 o § LAMP ASM 7 GROUND U C ^Jl 12020099 I— ecS ) PART OF LAMP ASM -24 .8 LT GRN BACKUP LAMP (PART OF LH TAIL STOP AND DIR LAMP ASM) 03 & 43 MODELS W/O RPO E62, E63 BACK UP LAMPS SECTION A - PAGE 75 FROM R.H. SIDE MARKER LAMP FROM R.H. TAIL, STOP & DIRECTIONAL SIGNAL LAMP FROM RH FRONT & ► REAR CLEARANCE ► LAMPS 150-.8 BLK 24 .8 LT GRN FROM END GATE IDENTIFICATION LAMPS FROM R.H. SIDE MARKER LAMP FROM R.H. TAIL. STOP & DIRECTIONAL SIGNAL LAMP 150 .8 BLK 24 .8 LT GRN RIGHT HAND BACKUP LAMP TO BULKHEAD CONNECTOR FOR REMAINDER OF CIRCUIT SEE BACK-UP LAMPSUTILITY, SUBURBAN MODELS RIGHT HAND BACKUP LAMP TO BULKHEAD CONNECTOR FOR REMAINDER OF CIRCUIT SEE BACK-UP LAMPSUTILITY, SUBURBAN MODELS 12015024 18 24 LEFT HAND BACKUP LAMP 12020099 ip CL p 'r FRONT END GATE IDENTIFICATION LAMPS 12020099 LEFT HAND BACKUP LAMP 150-.8 BLK 150 .8 BLK 24 .8 LT GRN 24- 8 LT GRN FROM LH FRONT & REAR CLEARANCE LAMPS FROM L.H. TAIL. STOP & DIRECTIONAL SIGNAL LAMP FROM L.H. SIDE MARKER LAMP FROM L.H. TAIL. STOP & DIRECTIONAL SIGNAL LAMP FROM L.H. SIDE MARKER LAMP 150 .8 BLK150 .8 BLK SHEET METAL GROUND FLEETSIDE PICKUP-RPO E63 BACKUP LAM PS SECTION A - PAGE 76 WIDE SIDE PICKUP-RPO R05 SHEET METAL GROUND R.H. SIDE MARKE LAMP HEADLAMP SWITCH R.H. TAIL, STOP & DIRECTIONAL LAMP TO COURT LAMP 9 .8 BRNSPLICE 9 12015798 150 .8 BLK BACKUP LAMP SHEET METAL GRN SPLICE 150 --------12015024 9 .8 BRN 9 8 BRN- 12020099 18 24 --- 9IT 19' SPLICE 150 An 12020184 BACKUP LAMP C j 5 9 ---- 150-.8 BLK-----40 .8 ORN 1201 SHEET METAL GRN ■150-.8 BLK SPLICE 9 9 .8 BRN 9 .8 BRN 8911029 L.H. TAIL, STOP & DIRECTIONAL LAMP HOT AT ALL TIMES Vk L.H. SIDE MARKER LAMP REAR FRONT FUSE BLOCK TAIL LAMPS UTILITY, SUBURBAN SECTION A - PAGE 77 RIGHT HAND SIDE MARKER LAMP HEADLAMP SWITCH X BACK UP LAMP 9 .8 BRN- TAIL. STOP & DIR LAMP m 24) 'yC JD 112 I 15 I 14 I 11 9 93 33 T | 12015798 — ■ 9 .8 BRN 9 .8 BRN 8917234 91 93 92 97 422 m 2 3 1________| [ 4 3 9 |4 2 0 || 35 | 25 | 31 | I « | 2 12015024 II . 18 I« 0 « 1 ]- ) X ” J X® ) 4 3 « | l 2 0 | 39 14 4 0 |f" “" 8917232 LEFT HAND TAIL, STOP & DIR LAMP -40 .8 ORN (3 (3 H 0 BO 0 0 0 a si i 0 0 a 0 e § tGN ACC IP% r»—n ■ATT i- l—n SHUNT a *oo SHUNT m 9 .8 BRN- m (S ««« i BD e BACK UP LAMP 0 11 >s PW* 30 A wsrxcr 20A I KM) 20A tact! ^?OA £2 I 26A I [~i5a"| SIDE MARKER LAMP »uS*HTlfXc sTo* mXI D§3 Q§] © OAUOC/IOCC HTR A/C *AO« BnMN'lir i i n lPw£rwoo j [J3 K3 (Ml [Ml (CM I CHOM o) D 3 B^B | ■ a a REAR FRONT FUSE BLOCK TAIL LAMPS STEPSIDE PICKUP (E62) SECTION A - PAGE 79 HEADLAMP SWITCH TO COURT. LAMP 6288424 6288424 TAIL LAMPS EXTENDED CAB PICKUP SECTION A - PAGE 80 FUSE BLOCK R.H. TAIL, STOP & DIRECTIONAL LAMP L.H. TAIL, STOP & DIRECTIONAL LAMP R.H. TAIL, STOP & DIRECTIONAL LAMP LICENSE LAMP 12020099 z DC 00 n r Q ift. CO GN _n g) is} ACC IPS r-i—r woo r\ 150 .8 BLK SPLICE 9 9 .8 BRN 8911029 HOT AT ALL TIMES L.H. TAIL, STOP & DIRECTIONAL LAMP ▼ 4 L.H. SIDE MARKE* LAMP O FRONT FUSE BLOCK 0 LICENSE LAMP UTILITY, SUBURBAN SECTION A-PAGE 81 R.H. SIDE MARKER LAMP Y R.H. TAIL STOP & DIRECTIONAL LAMP L.H. TAIL, STOP & DIRECTIONAL LAMP L.H. SIDE MARKER LAMP LICENSE LAMP FLEETSIDE (E63) WIDESIDE (R05) SECTION A-PAGE 82 REAR FUSE BLOCK RIGHT HAND HEADLAMP SWITCH 1 15 1 14 I I 12 i . ? . u £ ir ^ 91 92 8917234 422 FT CO o w o 8917232 -40 .8 ORN 0 ED 0 0 E ® ffi l_ 1 0 0 (3 0 2) (5) 0 WOO 0 MAH A'C 0i (3 0 ffl 0 (B ® 0 ° >s n— n r*— ri f-i—n •A TT IQ« SHUNT SHUNT ACC LPS 5A L" LJ~ ,J t o * 1 H o f l H oT I I m a I a u I ht M km c Bs£l G€l [p3 T 'l CTIV OAUOC/lOtf MTU AiC E lIS 9 C 3 frfl j REAR FRONT FUSE BLOCK o) LICENSE LAMP STEPSIDE PICKUP (E62) SECTION A-PAGE 83 HEADLAMP SWITCH R.H. TAIL, STOP & DIRECTIONAL LAMP 6288424 TO COURT. LAMP 19- 3 i •9 .8 BRN9 .8 BRN' 2977645 f BACKUP LAMP 9 .8 BRN 9 .8 BRN- CM Lm _ 18 1191 < r SPLICE 9 12015024 12020099 DUAL LICENSE LAMPS 2977107 SPLICE 9 9 .8 BRN 2977107 2977159 9 .8 BRN T 2977107 3 FRAME GRN 12020184 BACKUP LAMP X -40 .8 ORN- 0) g § m I is woo B OB E) (3 s KW i m 9 .8 BRN- IE mm e HOTAT ALL TIMES Q 13 (B El E ACC IP * PW* _ n SHUM? 6288424 E 9 159 D 3 B^S | LICENSE LAMPS PICK-UP EXTENDED CAB PICKUP SECTION A-PAGE 84 REAR FRONT FUSE BLOCK o ) L.H. TAIL. STOP & DIRECTIONAL LAMP 1989 P TRUCK SECTION B PAGE 2-3 4 5 6 7-10 11 12 13 14 15 16 17-21 22 23 DESCRIPTION FUSE BLOCK DETAILS START/IGNITION (8 CYL.) POWER DISTRIBUTION (DIESEL) POWER DISTRIBUTION (6 CYL.) POWER DISTRIBUTION (8 CYL.) HEAD LAMPS & PARKING LAMPS MARKER LAMPS HAZARD LAMPS DIRECTIONAL LAMPS HORNS WIPER/WASHER START/IGNITION THROTTLE BODY INJECTION FUEL CONTROL & IDLE AIR CONTROL (8 CYL.) PAGE 24 25-26 27 28 29 30-31 32-33 34 35-36 37 38-39 40 41 42 43 DESCRIPTION EMISSION CONTROLS (6 CYL.) EMISSION CONTROLS (8 CYL.) EMISSION CONTROLS (DIESEL) GLOW PLUGS (DIESEL) AUTO TRANSMISSION KICKDOWN SOLENOID (M4Q) ELECTRONIC CONTROL MODULE (ECM)-INPUTS (8 CYL.) ELECTRONIC CONTROL MODULE (ECM)-OUTPUTS (8 CYL.) ECM CHART (8 CYL.) BRAKE WARNING SYSTEM INSTRUMENT PANEL LAMPS INDICATOR LAMPS INSTRUMENT PANEL GAGES BACKUP LAMPS TAIL LAMPS LICENSE LAMPS SECTION B - PAGE 1 CAVITY "W "-C IR C U IT 50 IGN "O N " 2 5 A FUSED FEED — HTR & A/C CAVITY " I" CIRCUIT 3 9 CAVITY " A " —CIRCUIT 141 IGN "O N & CRANK" 2 0 A FUSED FEED - AUTO TRANS - DIESEL IND LP - BRK WARN LOW COOLANT IND/CHOKE LPS FUEL PUMP FEED IG N - "O N & A CC " —10A FUSED FEED - RADIO CAVITY " L " -C IR C U IT 8 PANEL LPS-5A FUSED FEED - TILT WHEEL (32) - W/S/WIPER SW ILLUM (42) - TRANS IND LP - RADIO DIAL CAVITY "B " —CIRCUIT 1 4 0 BATTERY 1 5A FUSED FEED - CLOCK - CIGAR LTR - DR JAMB SW - DOME/CARGO LPS 5 0 -3 .0 BRN-HEATER & A/C {C A V ITY " H " -C IR C U IT 9 3 | 9 3 -3 .0 W H T - W /S WIPERS- E 2 5 A FUSED FEED - HTR A/C m W/S/WIPER W/S/WASHERS 1 4 1 -1 .0 B R N /W H T -IG N SW (ACC) 8 .5 G R A -I/P LAMPS- CD BATT 4 4 -1 .0 DK G R N -L IG H T SWITCH IGN SHUNT 3 4 0 .8 PNK/W HT—TO BULKHEAD 20A 15A HORN/Di IGN "2 0 A GAUGE T/L LPS A ml>B 1 II II I b h i ibh 1 4 1 -1 .0 B R N /W H T-R A D IO (ACC) 4 -3 .0 B R N -IG N SW (ON/ACC) (UNFUSED)—| 4 -3 .0 B R N -IG N SW (ON/ACC) 9 3 -3 .0 W H T - W /S WIPERS 3 -3 .0 P N K -IG N SW (ON/CRANK) (UNFUSED) 5 0 -3 .0 B RN -HEA TER & A/C 2 -3 .0 R ED -LIG H T SW (UNFUSED) 1~5/T D id [ M/ ] STOP/HAZ -2 4 0 -1 .0 O R N -D O M E LAMP/HORN LAMP D l l 4 0 -1 .0 O R N -L T SW/TAIL LPS □ □ □ 1 4 0 -1 .0 O R N -B A T T /H A Z FLASHER t u r n bu 3 9 .8 PNK/BLK—INST CLSTR ("O N & CRANK") o [X] □ □ FUS/PLR 16 .8 PPL—DIR SIGNAL SW FRONT REAR DIRECTIONAL SIGNAL FLASHER 1 2 0 3 4 3 5 9 FUSEBLOCK 3 8 .8 DK B L U -T U R N & B/U LPS i A B L P W H COLOR MALE CONN NAT BRN BLK GRN RED BLU DK GRA 12004888 12004887 12004886 12004885 12004883 12004884 12004740 FUSE BLOCK (ALL EXCEPT L05) SECTION B - PAGE 2 FUSES 12004005 12004007 12004008 12004009 12004010 12004003 12004006 12004011 AMP COLOR 5 10 15 20 25 3 75 30 TAN RED LT BLU YEL W HT VIOLET BROWN LT GRN 7 5 .8 DK B L U -B /U LP SW 3 8 .8 DK BLU-DIRECTIONAL SIG/FLASHER CAVITY " W " - CIRCUIT 50 IGN “ O N " 2 5 A FUSED FEED —HTR & A/C CAVITY " I" CIRCUIT 39 CAVITY " A " -C IR C U IT 141 IGN "O N & CRANK" 20 A FUSED FEED - AUTO TRANS - IGN —"ON & A C C " — 10A FUSED FEED - RADIO DIESEL INDLP - BRK WARN LOW COOLANT IND/CHOKE LPS FUEL PUMP FEED CAVITY " L " -C IR C U IT 8~| PANEL LPS-5A FUSED FEED - TILT WHEEL (32) - W/S/WIPER SW ILLUM (42) - TRANS IN D LP - RADIO DIAL CAVITY " B " - CIRCUIT 1 4 0 BATTERY 1 5A FUSED FEED - CLOCK - CIGAR LTR - DR JAMB SW - DOME/CARGO LPS 5 0 -3 .0 B RN -HEATER & A/C CAVITY " H " -C IR C U IT 9 31 2 5 A FUSED FEED - W/S/WIPER W/S/WASHERS 9 3 -3 .0 W H T - W /S WIPERS 1 4 1 -1 .0 B R N /W H T -IG N SW (ACC) 8 .5 G R A -I/P LAMPS 2 4 0 -1 .0 O R N -D O M E LAMP/HORN LAMP 4 4 -1 .0 DK G R N - LIGHT SW 3 4 0 -1 .0 ORN —(F-PUMP SW FEED) 2 -3 .0 RED 4 -3 .0 B R N -IG N SW (ON/ACC) (UNFUSED) 4 4 0 .8 ORN/BLK STR (E C M -B A T FEED) 5 0 -3 .0 BRN -HEA TER & A/C 1 4 1 -1 .0 B R N /W H T-R A D IO (ACC) 3 -3 .0 P N K -IG N SW (ON/CRANK) (UNFUSED) 4 0 -1 .0 O R N -L T SW/TAIL LPS 2 -3 .0 R E D -L IG H T SW (UNFUSED) 1 4 0 -1 .0 O R N -B A T T /H A 2 FLASHER 9 0 6 -.8 PPL—(CRK SIGNAL TO ECM) 6 .8 PPL 3 9 .8 PNK/BLK—INST CLSTR ("O N & CRANK") 3 8 - 8 DK BLU-DIRECTIO NAL SIG/FLASHER 1 6 -.8 PPL—DIR SIGNAL SW 3 8 .8 DK B L U -T U R N & B/U LPS FRONT DIRECTIONAL SIGNAL FLASHER 1 2 0 3 4 3 5 9 FUSEBLOCK 4 3 9 - 8 PNK/BLU STR (ECM IGN) 7 5 .8 DK B L U -B /U LP SWITCH 4 -3 .0 B R N -IG N SW (ON/ACC) 1 A B L P W H COLOR MALE CONN NAT BRN BLK GRN RED BLU 12004888 12004887 12004886 12004885 12004883 12004884 12004740 DK GRA FUSES 12004005 12004007 12004008 12004009 12004010 12004003 12004006 12004011 AMP COLOR 5 10 15 20 25 3 75 30 TAN RED LT BLU YEL W HT VIOLET BROWN LT GRN 9 3 -3 .0 W H T - W /S WIPERS FUSE BLOCK (L05) SECTION B - PAGE 3 START/IGNITION LT9-V8 BODY S T Y L E -4 2 SECTION B - PAGE 4 FRONT REAR □ e GROUND +■ — RIGHT HAND BATTERY + ---LEFT HAND BATTERY □ □ C3 C3 i B FUSE BLOCK □ o ) HOT AT ALL TIMES C 3 o o [“ ^ REAR POWER DISTRIBUTION-LL4 DIESEL SECTION B - PAGE 5 POWER DISTRIBUTION L25 BODY STYLE- 4 2 SECTION B - PAGE 6 FRONT FUSE BLOCK REAR POWER DISTRIBUTION LE8 V -8 BODY S T Y L E -3 2 FUSE BLOCK REAR SECTION B - PAGE 7 POWER DISTRIBUTION LT9, V -8 BODY STYLE- 4 2 SECTION B - PAGE 8 FUSE BLOCK REAR ■32 BLK (BATT CABLE) FRONT FUSE BLOCK REAR POWER DISTRIBUTION L 0 5 - V 8 SECTION B - PAGE 9 TO CLUTCH SWITCH (MAN TRANS) OR TO NEUTRAL START & BACK-UP SWITCH (AUTO TRANS) f TO AIR SWITCH & M 4 0 KICKDOWN RELAY SHEET METAL GROUND POWER DISTRIBUTION P42 & L05 V-8 TBI DRIVE AWAY SECTION B - PAGE 10 ENG INE GROUND RIGHT-HAND HIGH-LOW HEADLAMP RIGHT-HAND SIDE MARKER LAMP 2 9 7 3 3 8 6 (P32) 12 0 3 4 3 7 2 (P42) LAMP—P32 (32/E 33 ONLY —P42) TO INSTRUMENT CLUSTER 6294015 1 1 -1 .0 LT GRN 12 .8 T A N ------- Q) 15 1 -3 .0 BLK FRAME GROUND SHEET METAL GROUND SPLICE 150 150-.8 BLK (P42 ONLY) 150 .8 BLK (P42 ONLY) \ 150-.8 BLK (P42 ONLY)- FRAME GROUND ENGINE GROUND Q) ■4-GRD STRAP (P42 ONLY)---------------- 0 1 9- 5 BRN 8 BLK R.H. PARK & DIRECTIONAL LAMP O IO O II) °® r ■9- 8 BRN- SPLICE 9 K .8 BLK L.H. PARK & DIRECTIONAL LAMP z 1 2 0 3 4 3 7 2 (P42) 2 9 7 3 3 8 6 (P32) z oc m ID oc m oo cn cn 1 1-1.0 LT GRN1 1-1.0 LT GRN12-.8-T A N ------12-.8 TAN ------ 1 5 0 -.8 BLK (P42 ONLY)- LEFT-HAND HIGH-LOW HEADLAMP 151-.8 BLK SHEET METAL GROUND 1 5 1 .8 BLK SHEET METAL GROUND TUVJ 6294015 LEFT-HAND SIDE MARKER LAMP LAMP —P32 (32/E33 ONLY - P42) 8900855 HEAD LAMPS & PARKING LAMPS SECTION B - PAGE 11 R.H. SIDE MARKER LAMP R.H. SIDE MARKER LAMP SHEET METAL GROUND 6294015 1151-.8 BLK 12004628 R.H. PARK & DIRECTIONAL LAMP R.H. TAIL. STOP, & DIRECTIONAL LAMP HEADLAMP SWITCH •15-.5 DK BLU SPLICE 9 9 .8 BRN- R.H. LICENSE LAMP 9 .8 BRN 9- 8 BRN ■9-1.0 BRN 9 .8 BRN l/P SPLICE 9 8917234 L.H. PARK & DIRECTIONAL LAMP 6288566 / 6288565 -9 .8 BRN------- G 2t — - r j j r ~ \ 8917233 6 3 3 50 39 1------------- l ( 9 3 l | 30 | 33 j I 35 I TO l/P CLUSTER CONN. 2 2 3 1 |4 ,9 | 8917232 1 H I -► L.H. TAIL. STOP, & DIRECTIONAL LAMP I ll3 0 jjjp * OB IB 03 0 0 IQ ID ID CD Q E) (D ID m* (D DB □ SECTION B - PAGE 12 0 150-.8 BLK 09 CD E •ATT )OI« ACC •HUNT •H U N T iP t BA 6294125 FibaI R oa] Roa] riojri 6294015 MARKER LAMPS L.H. LICENSE LAMP w s fw L jS?J HUH □□ L.H. SIDE MARKER LAMP dn FUSE BLOCK □ □ D3 C3 0 FRONT SHEET METAL GROUND L& g p REAR E o) r ^ 0 L.H. SIDE MARKER LAMP RH SIDE MARKER LAMP DIRECTIONAL SIGNAL SW LAMP—P32 (E32/E33 ONLY —P42) 1 r f l - 17 1.0 W H T----- i / r P 19 -1.0 DK GRN- 1 ; N -18 1.0 YEL------■ 10 - L if. 2 7 -1 .0 BRN — 15 .5 DK BLU PROVISIONS FOR RH TAIL. STOP & DIRECTIONAL LAMP (P32) ? J - l 6294015 14 .5 LT BLU- 7 11 X --n H 14 R.H. TAIL. STOP & DIRECTIONAL 28 /I J: 1° LAMP (P42) — 12004147 R.H. PARK & DIRECTIONAL LAMP .8 ppl X > o O r«- ri. hL fM 15 .5 DK BLU RIGHT 150 .8 BLK FROM INST CLUSTER CONN TURN SIG. INDICATOR LAMPS 12004215 FROM OIL PRESS GAUGE 14 14 .5 LT BLU 150 .8 BLK — FROM IGNITION SWITCH uj Q > O CO LEFT 150 FROM PARKING BRAKE SWITCH 2984855 6294125 ^ GROUND 1 8 -2.0 YEL L.H. PARK & DIRECTIONAL LAMP '8 19 2 .0 DK GRN 2 7 -1 .0 BRN----PPL eB < r P 8917234 l/P f 1 fNf - I 24 9 12 6294015 15 ------------ 1 14 .5 LT BLU e 3 3 &0 39 1 ’ U 1 14 11 ,1 3B 1 2 □ □I I tI i ----- 1 7 -1 .0 WHT L r U | 9 3 ,l 30 j . , 3 | 1 2 1 | l3 0 | r - 1 PROVISIONS FOR L.H. TAIL. STOP & DIRECTIONAL LAMP (P32) | [ 14o H------1 4 0 -1 .0 ORN- 'I — ^ 8 BLK- 9 1 29 1 © STOP LAMP SWITCH 0 G3 ( E ) " * ” 0 E (B [D B (5 CD 0 MT* n >S (B B m ClI B □ 0 u QD (B m B •ATT E m 1 91 I I 92 I 91 92 WINDSHIELD WIPER WASHER SWITCH 94 92 .8 PPL ■ 92- 8 PPL- WIPER MOTOR 9 1 . 8 GRA- 9 4 .8 PNK 93 .8 W HT- WASHER MOTOR FRONT WIPER/WASHER SECTION B - PAGE 16 FUSE BLOCK REAR r , ru ___ n + f-i—r - BATTERY (< 2 - START (IGNITION L 2 5 - 6 CYL. BODY STYLE- 4 2 FRONT REAR SECTION B - PAGE 17 —> w N — 4 i* I T ' - * --------------►!----------- — « ----------- f c - V : V— J 1 -• - | 'J J B % ■32 BLK (BATT CABLE) - START/IGNITION LE8-V8 BODY S T Y L E -3 2 SECTION B - PAGE 18 j-i--------n + — — BATTERY 1\ IW P iil WoTIhs □ FUSE BLOCK \2 _ FRONT □ □ □ C3 □ □ REAR ^ a r a ^ — - ° RED (P32) THERMO HW \ v v ' — 2 - 1.0 RED-THERMO HW CM f0 HOT AT ALL TIMES 32 BLK — n --------n — + RIGHT HAND BATTERY GROUND C3 D3 _ - n ____ □ __ + LEFT HAND BATTERY o) CDODJ FUSE BLOCK START/IGNITION LL4 DIESEL SECTION B - PAGE 19 START/IGNITION - L05-V8 SECTION B - PAGE 20 TO CLUTCH SWITCH (MAN TRANS) OR TO NEUTRAL START & BACK-UP TO PARK/ NEUTRAL RELAY (AUTO ONLY) 2 -5 .0 RED- BF 8911921 TO CLUTCH START SWITCH (MAN TRANS) OR NEUTRAL SAFETY SWITCH (AUTO TRANS) FRONT FUSE BLOCK REAR START/IGNITION L 05 -V 8 P42 & L 05 -V 8 TBI DRIVE AW AY SECTION B - PAGE 21 OXYGEN SENSOR 4 3 9 -1 .0 PNK/BLK 4 1 2 -.8 PPL- 12018791 GROMMET 12020107 TO COOLANT TEMP SENSOR THROTTLE POSITION SENSOR SPLICE 45 2 4 1 2 .8 PPL 4 1 2 -.8 PPL 4 5 2 .8 BLK 4 5 2 .8 BLK 4 5 2 .8 BLK 4 1 7 .8 DK BLU 4 1 7 -.8 DK BLU -4 1 7 -.8 DK BLU — 4 1 6 - 8 G R A ---- ■4 1 6 -.8 GRA -------- 4 6 7 .8 LT BLU — . 4 6 7 .8 LT BLU — 4 6 7 .8 LT BLU — 4 6 7 - 8 LT B LU ---- 4 6 8 .8 LT GRN — 4 6 8 .8 LT GRN — 4 6 8 .8 LT GRN — 4 6 8 .8 LT GRN — 4 3 9 -1 .0 PNK/BLK 4 3 9 -1 .0 PNK/BLK- 452 4 1 6 -.8 G R A ---- 410 SPLICE 416 12066287 SPLICE 467 SPLICE 468 m TO MAP SENSOR 12020753 ELECTRONIC CONTROL MODULE CONNECTORS INJECTOR 1 4 3 9 -1 .0 PNK/BLK 12020764 4 6 7 .8 LT BLUTO EVRV SOL. TO HALF FUNCTION ESC SPLICE 439 E (D CD 0 ffl 03 I E * »» 4 3 9 -1 .0 PNK/BLK E (B CD 0 E) CD ID MYR r«__n SHUNT •GN ACC I >8 4 6 8 -.8 LT GRN SHUN? [ W ] Q ba] p o *] p j i n III E 0 • ait ENGINE E B E (nP © — 4 3 9 -1 .0 PNK/BLK o>£ o (D O & w 0» Q IOu * •At*> cj G (II t©<0 c* M C O Jo ECM 1 10 AMP FRONT 4 3 9 .8 PNK/BLK THROTTLE BODY INJECTION (L05-V8) SECTION B - PAGE 22 8917232 r w i I® ® M S Si | GROMMET 12020107 TO ECM FUEL PUMP RELAY STEPPER MOTOR § 441 : 442 r ~ 4 44 IDLE AIR CONTROL 1201579s GROUND ALTERNATOR BRACKET SYSTEM GROUND NO. 2 (LH REAR CYLINDER HEAD) FUEL PUMP OIL PRESSURE SENSOR & SWITCH 12048390 FUEL CONTROL & IDLE AIR CONTROL —L05 SECTION B - PAGE 23 AIR DIVERT SOLENOID (NA5) AIR CONTROLLER (NA5) IDLE STOP SOLENOID EMISSION CONTROLS —L25 SECTION B - PAGE 24 ENGINE GROUND RIGHT HAND AIR DIVERT SOLENOID © S h ~ 150 .8 BLK 9 3 6 .8 YEL 3 9 .8 PNK/BLK 12015792 (NA5) NB2 l/P 39 .8 PNK/BLK- ENGINE I n— rn - F* SPLICE 93 6 0: 9 3 6 .8 YEL I 9 ij 7 1 l f.> I II II I f 33! 12 0 39 )L ^ °1 11 14 i ^ : - A 39 A □ Q J jD C Z D d aI 29 o ... b 12040753 i I 3 3 I i | 1 1 1 | J p l ..J r 2 , 8917253 AIR DIVERT SOL AIR CONTROLLER (N A 5 ) -9 3 6 -3 9 GROUND -1 5 0 TACH TO COIL NB2. - 1 5 0 .8 BLK - IGNITION SWITCH CHECK ENGINE LP AIR SW SOLENOID SPLICE 39 ■39 .8 PNK/BLK 4 1 9 -.8 BRN/WHT- — 121 .8 WHT - t n -121 -4 1 9 -4 3 6 ---------------- 8917232 TO CHECK ENGINE LAMP (NA5) 3 9 .8 PNK/BLK — -4 1 9 .8 BRN/WHT- 4 1 9 .8 BRN/WHT— 4 3 6 .8 BRN -----NB2 | 1 1 l- 12040947 39 .8 PNK/BLK 5 00 DISTRIBUTOR CONNECTOR m d 0 1 1 1 8911979 z oc CO op (b (*> ^ AIR CLEANER TEMPERATURE SWITCH 0 -> uj > 00 121 .8 WHT ENGINE SPEED SWITCH RELAY (D 0 * ! * 0 0 H El ID 0 ENGINE SPEED SWITCH SOLENOID NB2 LEFT HAND AIR DIVERT SOLENOID 0 CM -121 .8 W H T ----------- ^i 2 °- 00 o> m I £ r . - I _i 900 ’ I FRONT FUSE BLOCK ‘ “ U * 8917542 REAR 9 3 6 .8 YEL-----3 9 .8 PNK/BLK _J 12015792 ANTI-DIESEL SOLENOID (MAN TRANS ONLY) EMISSION CO NTRO LS-LT9 8911256 SECTION B - PAGE 2§ BODY GROUND RIGHT HAND AIR DIVERT SOLENOID (NA5) AIR DIVERTER SYSTEM RELAY (NA5) AIR DIVERTER MODULE (NA5) LEFT HAND AIR DIVERT SOLENOID EMISSION CONTROLS-LE8 SECTION B - PAGE 26 FAST IDLE SOLENOID 12004267 I n FUEL PRESSURE WATER IN FUEL SENSOR FUEL HEATER FUEL SHUT OFF VALVE EMISSION CONTROLS!DIESEL 1 -L L 4 TO SPLICE 39 SECTION B - PAGE 27 CD FUEL SHUT OFF VALVE GLOW PLUGS —LL4 DIESEL SECTION B - PAGE 28 12020274 TRANSMISSION KICKDOWN SOLENOID SPLICE 4 2 2 4 2 2 .8 TAN/BLK- 4 2 2 .8 TAN/BLK TO ALDL l/P TO AIR SWITCH 55 .8 ORN 2984092 KICKDOWN RELAY 12020753 39 .8 PNK/BLK — 3 9 .8 PNK/BLK — 4 2 2 .8 TAN/BLK 55 .8 O RN--------12052287 KICKDOWN SWITCH TRANSMISSION KICKDOWN SOLENOID FOR LE8, LT9, L25 ONLY TO OIL PRESSURE GAUGE FOR LE8, LT9, L25 ONLY (BODY STYLE ' 4 2 ONLY) -------- 55 .8 ORN — r j i:---------------------------- r 39 .5 PNK/BLK ------------------55 .8 O R N --------------------- x~ 4 I 7 I I SPLICE 39 55 .8 ORN------ (BODY STYLE 32 ONLY) GROMMET TO l/P CLUSTER CONNECTOR l/P (S ID CD 8 ID G3 03*** 8911781 (BODY STYLE 4 2 ONLY) GO ID ID mu Q E (D 09 IB E CD •ATT H>N 0 _ B □ E u ACC LPS 55 .8 ORN- 7 9 (BODY STYLE 32 ONLY) 12 15 29 1 1^ 1 14 11 □ □ □ □ 3 0 | 33 . I'i°l * - d KICKDOWN SWITCH TRANSMISSION KICKDOWN SOLENOID LL4 DIESEL ONLY ^ 55 12052641 FOR LL4 DIESEL ONLY LI C 3 0 D FRONT REAR FUSE BLOCK U 39 8917232 f= 1 \ g AUTOMATIC TRANSMISSION KICKDOWN SOLENOID (M 40) TO WATER IN FUEL SENSOR TO FUEL HEATER 39 .8 PNK/BLK - HOT IN START AND RUN 3 9 -.5 PNK/BLKSPLICE 39 2984092 □ r r TO COLD ADVANCE TEMPERATURE SWITCH 5 5 .8 ORN = LE8, LT9, L25, LL4 SECTION B - PAGE 29 THROTTLE POSITION SENSOR COOLANT TEMP SENSOR E.S.C. SENSOR E.S.C. HYBRID FUNCTION OXYGEN SENSOR 12015791 ELECTRONIC CONTROL M O DULE-INPUTS L05-V 8 SECTION B - PAGE 30 ■450-1.0 BLK/WHT ■ 439-1.0 PNK/BLK -4 3 9 -1 .0 PNK/BLK - SPLICE 4 4 0 -4 4 0 -1 .0 ORN T 4 4 0 -1 .0 ORN -4 4 0 -1 .0 ORN- ■440 1.0 ORN -4 4 0 -1 .0 ORN- GROMMET ■485- 8 BLK 12020107 TO SYSTEM CHECK LAMP 4 5 5 - 8 PPL- -4 5 5 .8 PPL -4 3 2 - 8 LT GRN- — 4 3 2 .8 LT GRN 12020753 4 1 7 -.8 DK BLU- ■41 7- 8 DK BLU- 4 5 2 - 8 BLK - ■416 .8 GRA----- -4 1 6 8 GR A ----- ■437 .8 BRN■451 .8 WHT/BLK - -4 1 0 .8 YEL ■410 .8 YEL- -4 5 2 .8 BLK- ■452- 8 BLK ■ 4 6 1 .8 ORN-------4 1 0 .8 YEL--------4 3 2 - 8 LT GRN 4 8 5 .8 BLK- •4 8 5 - 8 BLK- ■412-.8 PPL- 4 1 2 .8 PPL- TO ECM •4 1 7 .8 DK BLU■416 .8 GRA----- -4 8 6 .8 BRN 4 5 0 -1 .0 BLK/W HTFROM EVRV SOLENOID •4 5 0 -1 .0 BLK/WHT • FROM FUEL PUMP RELAY GROUND ALTERNATOR BRACKET n z ■440-1.0 ORN 4 3 7 .8 BRN- ■437 .8 BR N ---------■ 450-1.0 BLK/WHT ■ 450-1.0 BLK/WHT- "‘"''S P LIC E 4 5 0 ■ 450-1.0 BLK/WHT- *yx ■450-1.0 BLK/WHT - -► CRANK DISC. FUSED 4 1 2 .8 PPL■413-.8 TAN- ■413 .8 T A N ---------- -4 5 5 .8 PPL------------4 5 0 -1 .0 BLK/WHT■450-1.0 BLK/WHT- SYSTEM GROUND NO. 2 n z ■486 .8 BRN---------- (LH REAR CYL HEAD) B A.L.D.L. OB E l @ ® [D 0 ^ GD 00 CD H E 0 0 GD G3 CD B □ 0 E fo SHUNT SHUNT C 3 [ g ] a oS |5 A (drrW ■ 4 6 1 .8 ORN- VEHICLE SPEED SENSOR HORN OW ION D 2Q RADIO K ] K ] B§] GROUND SPEED SENSOR 4 5 0 -1 .0 BLK/WHT - ■451-.8 WHT/BLK- 4 3 7 .8 BRN---------- ■450-1.0 BLK/WHT- 15300027 t 12020043 Tl IPs GAuGI M1H PuMP HVb EMI © t Z D K ] Co Js 9 6 6 .8 T A N ------■1 5 0-.8 B LK ------- 12004827 TL QAUGf IGN 20 AMP HT* ffEfl C3 hop □ □ 0 0 C3 □ D FRONT 860 FLOW SWITCH ) FUSE BLOCK 8 6 0 .8 YEL9 6 5 .8 BLK/YEL6288440 W\ GROUND 150 .8 BLK150 .8 BLK SECTION B - PAGE 36 9 6 5 .5 WHT ' CAPAC/DIODE LEAD LL4 ONLY -9 6 5 .8 BLK/YEL8900655 BRAKE WARNING SYSTEM (RPO UJ1 FOR B3D) 39 .8 PNK/BLK- ALARM 8905825 REAR ILLUM TRANSMISSION DIAL LAMP SOCKET ILLUM 0 WIPER/WASHER SWITCH LAMP (LE8, LL4 ONLY) ILLUM HIGH BEAM 0 89 0 5 3 8 1 TTo BRAKE 0 0 ^ 150 .8 BLK- l 9 4 l 1 j 1 91 LO , 150 11 L T5J0J1 1 | ' --------- 1< » H1 !J (> r ....— I | il WINDSHIELD WIPER WASHER SWITCH 1 91 1 1 9 2 1 SHEET METAL GROUND 8 9 1 /3 1 0 --- o o pJ -j-ki 18 1i" i 1301 i , i M 11 5 0 1 l39l 1 1 r1- 11{ 35~] 1 39 1 1 * 1 — 1 h - O □ QD HEADLAMP SWITCH 12004885 m 1 2 0048 85 8 .5 GRA- -8 .5 GRA- QH CD 2984792 O B TS 0 09 EJ to BMD " ° 4 4 -1 .0 DK GRN j g j i^ j [ g ] n in ® d §] © O S CX) D 3 a m □□□□ cn o ' a c C=G C3 B C=3 □ □ REAR FRONT FUSE BLOCK HOT WITH LAMPS IN PARK OR HEADLAMPS 150 .8 BLK- l/P GROUND INSTRUMENT PANEL LAMPS SECTION B - PAGE 37 ■419-.8 BRN/WHT------------------------------------------------------ ^ TO ECM BRAKE PRESSURE WARNING SWITCH 11 HI 33 .8 TAN/WHT DIMMER SWITCH 4 14] BH 10 r . 12 L OIL PRESSURE SWITCH 8900855 9 3 1 . 8 DK BLU 139 .8 PNK/BLK 9 3 1 -1 .0 DK BLU' 8900420 2977253 4 1 9 -1 .0 BRN/W HT' ■39- 5 PNK/BLK' ■ 3 3 .5 TAN/WHT 33 .5 TAN/WHT 12004888 m m b s b m e *** 0 IS ID ID B Q Q 19 MT» QD H) m ft) E •ATT ION n __ i“ l f ! — r- | IS A 20A SHUNT ACC SHUNT □ E Q >< IPS p__i I SA TO DISTRIBUTOR GAUOK □ 1SA □ □ □ 0 aD D INDICATOR LAMPS SECTION B - PAGE 38 FRONT FUSE BLOCK REAR 11-.5 LT GRN (ST I I RING COL DIRECTIONAL SIGNAL SW SWITCHESI T~o SF •16 .8 PPL- T (LE8) 0 (LE8, -N A 5 ) 12004215 ILLUM 0 HIGH BEAM 0 I TO l/P CONN CHECK ENGINE LAMP ILLUM © ■27-1.0 BRN- CHOKE WARNING LAMP ILLUM 0 CHECK ENGINE LAMP (L05) 8905381 BRAKE H O T )*' 0 12004147 8905381 LEFT TURN SIGNAL LAMP 0 RIGHT TURN SIGNAL LAMP 6294125 ■15 .5 DK BLU 13 9-.8 PNK/BLK ■14 .5 LT BLU L05 ONLY -9 3 1 -1 .0 DK BLU LT9, El TO KICK E3 ONLY | DOWN SW *+ BUr~l ■419-1.0 BRN/WHT- — 4 1 9 .8 BRN/WHT TO PARK/NEUTRAL RELAY L0 5 ONLY L TO FUEL CYCLER MODULE -3 9 .5 PNK/BLK- ■39- 5 PNK/BLK■39- 5 PNK/BLK ) QTJ I QD GD y q S -3 9 .5 PNK/BLK-3 3 .5 TAN /W H T- ■33 .5 TAN/WHT33 .5 TAN/W HT- -3 3 .5 TAN/W HT- m n Qso} □ dh ■33- 5 TAN/W HT- ■ 3 3 .5 TAN/WHT- 2984792 T ° ° 1------o i i— 1 5 0 .8 BLK- CT3 33 o -• o ° ^ o ii * —i IGNITION SWITCH o io o o •- < 4 l— I PARK BRAKE SWITCH OR OPTION J> r t j x> Vt 1 5 0 -3 .0 BLK •11 -.5 LT GRN- INDICATOR LAMPS SECTION B - PAGE 39 COOLANT TEMP SWITCH COOLANT TEMP SENDER METAL TEMP SWITCH OIL PRESS SENDER FUEL PUMP OIL PRESS SENSOR & SW. ILLU M ILLUM ( f ) (D Ct) 6288704 12045896 INSTRUMENT PANEL GAGES SECTION B - PAGE 40 REAR FRONT FUSE BLOCK ILLUM H IG H B E A M FUEL PUMP BRAKE SW. TRANSMISSION BACK-UP LAMP SWITCH 0 IS IS CD B E (D 0 " * * 0 (D ID □ B E Q E < MT* ION ACC I Ci ID (5 ID f t E ID E •ATT (AUTO TRANS ONLY) I MANUAL TRANSMISSION ONLY IPS SHUNT [b A R oTI l CTj Roa] 4 ^ 2 [ 20* ] T O r1 2 9 7 3 4 0 7 |( 75 || 24 | HOT IN START AND RUN J30 WMI C3 □ □ □ P ^ IF I 2973407 I I — 75 .8 DK B LU — --------------1 j □ — •75- 8 DK BLU PROVISIONS FOR BACK-UP LP 8917095 RIGHT HAND BACK-UP (RPO E32/E33 ONLY) ---------------------------- 24 .8 LT G R N ---------- 1 ■24- 8 LT GRN- 2 4 - 8 LT GRIM---------- FRONT FUSE BLOCK 3 8" m ____________ I ----- 75- 8 DK BLU BLU-I (ALL EXCEPT L05) 2977107 .8 BLK .................. 2 4 -2 .0 LT G E E 03 B 0 E E 8917234 © E CD B E □ E NT* liz jQ T E E GJ CD E 0 E • ATT o —n io*w n — r-» ACL . S 9 I; s ; IPS SHUNT SHUNT Ah 0 * 3 o iQN »g Ml B/t iSS ^ kB I kS HOWN DM l/P f,. 6288566 6288565 S 'S □ □ 1kS 9 I 29 14 12 15 I 6 3 L _ --- If93 1155 350 39 11 .8 BLK REAR 38 .8 DK BLU 120 75- 8 DK BLU 2 30 I 33 J | 35 | | 1 I | 2 1 1 3 0 |( - ...I. )r 2977107 8917232 PROVISIONS FOR BACKUP LP LEFT HAND BACK-UP LAMP (RPO E32/E33 ONLY) BACKUP LAMP SWITCH 4-SPEED IWIAN. ONLY m C H m Ti S ^ 24 — 24 .8 LT GRN----------- ■ K m — 75- 8 DK BLU ----------- 75 12015792 24 | 4I£75 6294468 2977373 MANUAL ONLY 8911781 GROMMET BACK-UP LAMPS SECTION B - PAGE 41 R.H. SIDE MARKER LAMP PROVISIONS FOR R.H. TAIL. STOP & DIRECTIONAL LAMP (P32) R.H. TAIL, STOP & DIRECTIONAL LAMP (P42) HEADLAMP SWITCH Z 2984855 SPLICE 9 l/P ■9 .8 BRN- 9 .8 BRN- R.H. LICENSE LAMP 9 .8 BRN- L.H. LICENSE LAMP 9- 8 BRN 9 -1 .0 BRN9 -1 .0 BRN- f^G y - lalgl l - S f e ] 6288566 SPLICE 9 6288565 8917234 0 -TT \ 9 12 15 29 1 1 TT 8917233 TO FORWARD LAMPS 6 3 350 39 120 2 14 11 I_________ l | 9 3 l | 30 1 1 35 | | 2 - M 4 ,9 I 8917232 1 | I HOT AT ALL TIMES | |1 3 0 |T ~ \ f 2984855 L.H. TAIL, STOP & DIRECTIONAL LAMP (P42) „ 0 0*1* m □ B E E ® 4 Hr* p ’ □ B E E L.H. SIDE MARKER LAMP E cd B CD m »•* ACC SHUNT [ 6* I □ □ □ □ C 3C3 C 3P □ FRONT TAIL LAMPS SECTION B - PAGE 42 FUSE BLOCK REAR PROVISIONS FOR L.H. TAIL. STOP & DIRECTIONAL LAMP (P32) 44 R.H. SIDE MARKER LAMP 9 c f PARK OFF s v HEAD f PARK O OFF 12004628 TO R.H. TAIL. STOP & DIRECTIONAL LAMP (P42) HEADLAMP SWITCH PROVISIONS FOR LICENSE LAMP (P32) R.H. LICENSE LAMP (P42) SPLICE 9 ------- 9- 8 BRN ■9 .8 BRN- l/P • 9 .8 BRN .8 BLK X ■9- 8 BRN- 9 -1 .0 BRN — — 9 -1 .0 BRN ‘ -9 .8 BRN6288566 k ' I I TO FORWARD LAMPS N 9 12 15 - 1^ 6 3 350 39 2 1 30 | 33 | 120 I 3b | ^ ] 4 9 I PROVISIONS FOR LICENSE LAMP (P32) 29 1 IT L.H. 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