1 INTRODUCTION This booklet contains Wiring Diagrams for 1979 vehicles listed in the contents below. All diagrams contained in this booklet are based on the latest product information available at the time of publication approval. The manufacturer reserves the right to make product changes at any time. Wire sizes in this booklet are metric. The following table shows metric to AWG size conversions. WIRE SIZE CONVERSION TABLE METRIC SIZE (mm)2.22.5.8 1 2 3 5 8 13 19 32 AWG SIZE 24 20 18 16 14 12 10 8 6 4 2 CONTENTS VEHICLE CAB, ENGI~";E & CHASSIS WIRING DIAGRAM C, 1<-10 thru 35 A-I, 2, 3, 4, \ 6 G-lO thru 35. 8-1, 2, 3, 4 P-I0 thru 35.. C-l, 2 D-SO.. D-l, 2, 3
2 CIRCUIT TABULATION Number 2 3 4 5 Color 6 7 8 9 10 11 Ligh~ Green 12 13 14 Light Blue 15 16 17 18 19 20 Light Blue 21 Pink 22 24 25 26. 27 28 29 30 Pink 31 32 33-34 35 36 37 38 Name Red Feed, Battery - Unfused If II It Pink I Feed, Ign. Sw. On & Crank. Unfused IFeed, Ign. Sw. "Accsy & On", Unfused Neutral Safety Start Sw. or i Start Relay Feed Starter Solenoid Feed Primary Ignition Resistance By-Pass Instrument and Panel Lights (Fused No. 44 Cir.) Tail, License, Park and Side Marker Lamp Feed Dimmer Sw. Feed Headlamp Feed, Hi-Beam Headlamp Feed, Lo-Beam Front Parking Lamps L.H. Indicator and Front Directional Lamps R.H. Indicator and Front Directional Lamps Directional Signal Sw., Feed From Flasher Directional Signal Sw., Feed From Stop Sw. Stop and Directional Lamp or Directional Lamp Only - Rear L.H. Stop and Directional Lamp or Directional Lamp Only Rear R.H. Stop Lamp (Only) Spot Light Direct Ground Trailer Back Up Lamp Feed Feed, Voltage Regulator Field (F) (Gen/Reg.) Traffic Hazard Sw., Feed from Hazard Flasher Ground, Horn Sw. Horn Feed Fuel Gauge to k Unit Oil Pressure, Engine Map Light Feed Warning Light - Brake Fog or Drive Lamp Ground, Eng. Coolant Temp. Sw. (Hot) Ground, Eng. Temp. Sw. (Cold) Ground, Eng. Metal Temp. Sw. (Hot) Flasher Fused Feed Number Color 39 Pink- 40 Orange 41-42 43 44 45 46 47 50 51 52 Orange 53 54 55 Orange 56 Taf"\ 57 Orange 58 59 60 Orange- 61 62 63 64 65 66 67 68 69 70 71 72 73 Blue - Pink Light Blue - Name Feed, Ign. Sw. "On and Crank" - Fused Feed, Battery Fused Feed, Ign. Sw. "Accsy and On" Fused Feed, AIC Auto Relay Radio Feed I.P. and Lights Feed (Usually light Sw. to Fuse) Marker and Clearance Lamps (Trailers) Rear Seat Speaker Feed from Single Radio or Right Stereo Auxiliary (Trailer) Feed, Ign. Sw. "On" - Fused Blower Resistor Feed - Low Feed, Blow Sw. "Hi" or Selectro Sw. "Max Cold" Valve Release Solenoid to Control Box Control to Shield Kick Down Solenoid Feed Amplifier to Transducer L.H. Cornering Lamp Feed R.H. Cornering Lamp Feed Compressor Feed Feed, Battery, Breaker Protected Ground, Resistive, Auto AIC Amb. Sensor Ground, Resistive, Auto AIC Feed Back Pot Feed, Blower Sw. "Medium 1" Blower Sw. Feed from AIC Selector Sw. Blower Motor Feed Feed, AIC Selector Sw. (Comp. Ct.) Feed, AIC Freon Press, Cut- Out Sw. Ground, Resistive, Low Cooland Probe Ground Low Coolant Modu Ie Feed, Relay, Ign. Sw. Ground, AIC Selector Sw. "Def" Feed, Blower Sw. "Medium 2" Feed, Blower Sw. "Medium 3" I
3 CIRCUIT TABULATION Number. Color 74 75 76 Pink 78 Light Blue 80 83 84 85 86 90 Pink 91 92 93 94 Pink 95 96 99 101 102 105 106 107 111 112 115 Light Blue 116 117 118 119 120 121 125 126 130 131 -Pink 132 133 135 Name Feed to Throttle Switch Feed. Ign. Sw. "On and Crank" - Fused Feed, Ign. Sw. Electric Choke Feed Ground Key Warning Buzzer Feed, Cruise Engage Sw. "Retard" Feed, Cruise Engage Sw. "Engage" Ground, Cru ise Indicator Regulator Feed, Cruise Brake Release Sw. Feed, Cutout Sw., Ci r. Brkr. Protected Windshield Wiper - Low Windshield Wiper - Hi Windshield Wiper Motor Feed Windshield Washer Sw. to Washer Ground, Pulse Wiper Sw. Feed, Pulse Wiper Rheostat Sw. Windshield Washer Low Fluid Resistor Output to Blower Relay Sl Alternator - Regulator Sensing Ammeter - Generator Ammeter Battery Over Speed Warning Light Ground, Anti-Ski Low Air Sw. Telltale Temperature Gauge (Hot) Speaker Return, RT rr Stereo Speaker Return, LF rr Stereo Speaker Return, RT Frt. Stereo Speaker Return, LF Frt. Stereo Generator (Alternator) to Regulator Electric Fuel Pump Feed Tachometer to Coil Door Jamb Switch Seat Back Lock Feed Generator (Alternator) Ext. Resist. 2 Ohms/Foot Generator (Alternator) Ext. Resist. 1 Ohm/Foot Ground, Fuel Economy Sw., Amber Telltale Ground, Fuel Economy Sw., Grn. Telltale Ground, Resistive, Temp. Gauge Sender Number Color 139 Pink- I 140 I 141 142 143 144 145 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 Orange - Pink Orange ; i I ; i - Name Feed. Ign. Sw. "On and Crank" - Fused Feed, Battery - Fused Feed, Ign. Sw., "Accsy and On" Rr Compartment Lid Lock Release Feed Radio Sw. "On" Feed to Pwr Ant Sw. Feed, Pwr Ant Up, Relay Ground - Direct Ground - Direct Ground - Direct Ground Direct Ground Direct Ground - Direct Ground - Sw. Body Interior Lamps such as Dome, Courtesy, Map Warning, etc. Ground - Sw. Body Interior Lamps - such as Dome, Courtesy, Map, Warning etc. Ground Sw. Body Interior Lamps - such as Dome, Courtesy, Map, Warning etc. Ground, Key Warning Buzzer Power Antenna Down Power Antenna Up Power Top - Up Power Top - Down Window Control LF Up Window Control LF Down Wi ndow Control RF Up Window Control RF Down Window Control LR Up Window Control LR Down Window Control RR Up Window Control RR Down Vent Control LF Close Vent Control LF Open Vent Control RF Close Vent Control RF Open Power Seat Fore Power Seat Aft or Recline Power Seat 6-Way Fore and Aft Power Seat - 6-Way Solenoid Rear - Up and Down Power Seat - 6-Way Solenoid Front Up and Down I
4 CIRCUIT TABULATION Number 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 198 199 200 201 202 203 204 205 Color light Blue Light Blue - Light Blue light Green light Blue light Green light Green Light Blue - 206 I 207 208 209 210 211 212 213 214 215 216 I i 217 I 218 Starter Interlock Starter Feed Starter Interlock Buz and Lp Feed La Level Actuation Passenger System Common Return Hi & Lo Fire s Passenger Bumper Sw. Actuation Lo Pressure Warning Warning Lamp Ground Warning Lamp Sensor Recorder to Sensor Power Feed Warning Lamp Feed Sensor & Bumper Sw. Power Feed Recorder Power Feed Driver Low Level Actuation Driver Return Hi Level Actuation Passenger Ign. Sw. Cant Air Rest Feed Feed, Belt Warn Timer (Timed 39 Ct.) Seat Belt Warn System-Buzzer Ground to Belt Assy Sw. Feed, Ign. Sw. "On & Crank" Fused Feed, Battery - Fused Feed, Throttle Control Spark Valve Feed, Drive Selector Sw. Feed, L T FID Solenoid Relay Feed, RT F ID Solenoid Relay Feed, ADL Lock Relay Coil Feed, to AIC Shut Off Relay Feed, to AIC Compressor Harn Relay Feed, From AIC Harn Ground, ADL Module Unlock Output Ground, ADL Module Lock Output Ground, AD L L T Unlock Relay Coil Ground, ADL RT Unlock Relay Coil Ground, Module. Lamp Out Indicator Ground, AIC Press, Sw. Theft Deterrent - Hood Sw. Theft Deterrent Alarm Arm Stripe - - Name Power Solenoid - Fore and Aft Power Seat 6-Way - Aft and Down Tailgate or Center Partition Window Up Tailgate or Center Partition Window Down Vent Control LR Open Vent Control LR Close Vent Control R R Open Vent Control RR Close Power Seat 4-Way - Fore and Down Power Seat 4-Way Aft and Up Power Seat 4-Way Solenoid Up and Down Defogger - Hi or Si ngle Speed Defogger - Low Speed - 0.38 Ohms per foot Electric Door Lock - Unlock Electric Door Lock Lock Ground, Resistive, AIC In-Car Sensor Rear Seat Speaker Feed trom Radio Left Stereo Front Speaker Feed From Radio Single or Right Stereo Front Speaker - Feed trom Radio Left Stereo Ground, Compressor over Heat Sw. Rear AIC Potentiometer Feed Thermal limiter Feed Seat Belt Seat Sensor to Belt Retractor (Grd) Neutral Start Sw. to Buzzer and Lamp Seat Sensor to Neutral Start Sw. (Lamp and Buzzer Grd) Sw. Ground (TCS) Park Brake Warning Lamp Power Seat - 6-Way - Fore and Down - "A" Body Power Seat 6-Way - Aft and Up - "A" Body LH Seat Sensor Center Seat Sensor R H Seat Sensor LH Sw. Center Buckle Sw. (Feed) RH Sw. Interlock Relay - Ground (Provided by Electronics) I Cifcuit ; Number 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 237 238 239 240 242 243 244 245 246 247 248 249 252 253 254 255 256 257 260 261 Color light Green- light Blue Orange Pink Pink Light Blue Dark Qreen Pink- Orange - Dark Name I
5 CIRCUIT TABULATION Number Color Name 262 Theft Deterrent - Key - Door Unlock and Alarm Disarm 263 Light Blue Theft Deterrent Alarm 264 Theft Deterrent - Arm Indication 265 Theft Deterrent - Alarm Output 266 Pink Theft Deterrent - Alarm Arm Abort 267 Pwr Seat - Fore and Up Recl iner 268 Pwr Seat - Aft and Down Recliner 269 Pwr Seat - Sol Up and Down Recliner 270 Feed, Amplifier to Potentiometer 271 Ground, Potentiometer 272 Feed, Potentiometer Rheostat 273 Feed, Hdlp Sw. to Amplifier, Hdlp Sw. 274 - Feed, Hdlp Sw. to Amplifier 275 Feed, Neut Saf Start Sw. "Park" 276 Recl. Mtr. Feed, Power St. Fwd. 277 Light Blue Recl. Mtr. Feed, Power St. Recliner 278 Amplifier to Photocell 280 Pink Feed, P.M. Motor Up Cycle (Deck Lid Pull Down) 281 Ground, Relay Coil Down Cycle (Deck Lid Pull Down) 291 Ground, Heated Glass Timer, On-Off Sw. 292 Light Blue Feed, Heated Glass Timer, On-Off Sw. 293 - Feed, Heated Glass Timer 294 Door Lock Motor - Unlock 295 Door Lock Motor Lock 300 Orange Feed, Ign. Sw., "On" - Unfused 339 Pink- Feed, 19n. Sw. On and Crank Fused 340 Orange Feed, Battery - Fused 350 Pink- Feed, Ign. Sw. "On" - Fused 394 - Ground, L T FID Remote Handle Sw. 395 Light Blue Ground, RT FID Remote Handle Sw. 402 Feed, Electronic Cruise Control Valve 439 440 Pink Orange Feed Ign. Sw. "On & Crank" - Fused Feed, Battery - Fused i Number 618 619 756 801 804 807 808 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 827 828 831 Color - Green- - Pink Pink Orange Orange Name Feed, L T Side Trailer and Direction Feed, RT Side Trailer and Direction Feed, Vac Sol (For Electronic Distributor) Feed, EFI Battery, Fusible Link Protected Feed, EFI, Ign. Sw. "Crank", Fusible Link Protected Feed, EFI Battery, Fused Feed, EFI Module Fast Idle Valve Output and 3 ' Fused Feed, Distri butor Electron ics Feed, EFI Module Group Two Injector Output Fusible Link Protected Feed, EFI Module Group One Injector Output Fusible Link Protected Feed, EFI Distributor Trigger and 815, Fused Feed, EF I Distributor Trigger and 815, Fused Feed, EFI Module Distributor Trigger Output, Fused Accelerator Enrichment Input #2 Accelerator Enrichment Input #1 Accelerator Enrichment Sw. Supply Voltage Clossed Throttle Sw. Wide Open Throttle Switch Ground, EFI Module Coolant Temp. Sensor Output Ground, Resistive, Coolant Temp. Sensor Ground, EFI Module Air Temp. Sensor Output Ground, Resistive, Air Temp. Sensor Feed, EFI Module Elec Fuel Pump Output Fused Feed, EFI, Ign. Sw. "On & Crank", Fused Feed, EFI Module EGR Solenoid Output, Fused --