GMC Pickup C2500 (1985-2000) convenience center Wiring diagrams

BATTERY JUNCTION BLOCK (RIGHT REAR ENGINE COMPARTMENT, AT COWL) BLK WIRE CARGO LAMP CARGO LAMP SWITCH CONVENIENCE CENTER COURTESY SWITCH CTSY FUSE FRONT DOME LAMP FUSE BLOCK HOT AT ALL TIMES IN-LINE FUSE LEFT FRONT DOOR JAMB SWITCH ORG/ WIRE ORG/BLK WIRE PANEL DIMMER SWITCH RED WIRE RIGHT FRONT DOOR JAMB SWITCH UNDERHOOD REEL LAMP WHT WIRE

BATTERY JUNCTION BLOCK (RIGHT REAR ENGINE COMPARTMENT, AT COWL) BLK WIRE CARGO LAMP CARGO LAMP SWITCH CONVENIENCE CENTER COURTESY SWITCH CREW LEFT REAR DOOR JAMB SWITCH CAB ONLY CTSY FUSE FRONT DOME AND READING LAMPS FUSE BLOCK HOT AT ALL TIMES I/P COMPARTMENT BOX LAMP IN-LINE FUSE LEFT FRONT DOOR JAMB SWITCH LEFT I/P COURTESY LAMP NCA WIRE ORG/ WIRE ORG/BLK WIRE PANEL DIMMER SWITCH REAR DOME AND READING LAMPS RED WIRE RIGHT FRONT DOOR JAMB SWITCH RIGHT I/P COURTESY LAMP RIGHT REAR DOOR JAMB SWITCH UNDERHOOD REEL LAMP WHT WIRE

BATTERY JUNCTION BLOCK (RIGHT REAR ENGINE COMPARTMENT, AT COWL) BLK WIRE CARGO LAMP CARGO LAMP SWITCH CONVENIENCE CENTER COURTESY SWITCH CREW CAB ONLY CREW CAB, SUBURBAN, UTILITY W/OVERHEAD ROOF CONSOLE CTSY FUSE FRONT DOME LAMP FUSE BLOCK HOT AT ALL TIMES IN-LINE FUSE LEFT FRONT DOOR JAMB SWITCH ORG/ WIRE ORG/BLK WIRE OVERHEAD ROOF CONSOLE LAMPS PANEL DIMMER SWITCH REAR DOME LAMP RED WIRE RIGHT FRONT DOOR JAMB SWITCH SUBURBAN/YUKON BASE UNDERHOOD REEL LAMP WHT WIRE

A/C A/C HIGH COMP- PRESSURE RESSOR CUTOUT CLUTCH SWITCH # 2 A/C CONTROLLER ALL EXCEPT DRL ASH TRAY LAMPS AUDIO ALARM MODULE AUXILIARY BATTERY RELAY BLK WIRE BLK/WHT WIRE BLOWER MOTOR CENTER GLOW HIGH PLUG MOUNT CONTROL STOPLAMP MODULE RELAY CENTER HIGH MOUNT STOPLAMP (CHMSL) CIGARETTE LIGHTER ASSEMBLY CONVENIENCE CENTER CONVENIENCE DATA CENTER LINK CONNECTOR COOLANT LEVEL FUEL SENSOR HEATER CRUISE CONTROL MODULE DAYTIME RUNNING LAMPS MODULE DAYTIME RUNNING LAMPS RELAY DIESEL ENGINE ONLY DIODE EGR ELECTRONIC VACUUM FUEL REGULATOR PUMP SOLENOID AND VALVE SENDER ENGINES FOUR- WHEEL DRIVE INDICATOR FROM LEFT HIGH (OR HIGH/LOW) BEAM HEADLAMP FUEL PUMP RELAY GRA I/P COMP- ARTMENT BOX LAMP INSTRUMENT CLUSTER LEFT DOOR JAMB SWITCH LOW COOLANT WARNING LAMP MODULE MODULE NCA WIRE ORG/ WIRE PANEL DIMMER SWITCH (ASSEMBLY) PICKUP ONLY POWER LOCKS POWER WINDOWS POWER SEAT POWERTRAIN CONTROL MODULE (PCM) PUMP MOTOR RADIO REAR AUXILLIARY HEATER CONTROL REAR DEFOGGER SWITCH REAR WASHER PUMP MOTOR REAR WIPER/ WASHER SWITCH RED/WHT WIRE RIGHT DOOR JAMB SWITCH ROOF MARKER LAMPS RWAL MODULE SAFETY BELT RETRACTOR SWITCH SUBURBAN, UTILITY ONLY TAN WIRE TAN/WHT WIRE TURN FLASHER VEHICLE PARK/ SPEED NEUTRAL SENSOR POSITION BUFFER SWITCH W/ DIESEL ENGINES ONLY W/ HD AUTOMATIC TRANSMISSION WATER IN-FUEL SENSOR WHT/ BLK WIRE WIPER MOTOR AND HEATED MODULE OXYGEN (FRONT) SENSOR

BLK WIRE BLK/WHT WIRE BRN WIRE CHASSIS CAB CONVENIENCE CENTER DATA LINK CONNECTOR ENDGATE ENDGATE CLEARANCE LAMPS EVRV ELECTRONIC VACUUM REGULATOR VALVE SOLENOID FUEL PUMP FUEL PUMP RELAY HEAVY DUTY TRAILER HOT FUEL HANDLING MODULE KNOCK SENSOR MODULE LEFT CARGO DOOR DEFOGGER GRID LEFT DOOR CONTACT SWITCH LEFT FRONT CLEARANCE LAMP LEFT LICENSE LAMP LEFT REAR CENTER TAIL, STOP, HIGH LICENSE, MOUNT TURN AND STOPLAMP BACKUP LAMPS LEFT REAR CLEARANCE LAMP LEFT REAR FENDER LEFT REAR TAIL, STOP, TURN AND BACKUP LAMPS LEFT TAIL/ STOP, TURN AND BACKUP LAMP ORN/ PARK/ NEUTRAL POSITION SWITCH PICKUP (W/O DUAL REAR WHEELS), SUBURBAN AND UTILITY PICKUP WITH DUAL REAR WHEELS POWERTRAIN CONTROL MODULE (PCM) REAR DOOR W/ AUXILLIARY JAMB SWITCH HEATER, AIR CONDITIONING REAR ENDGATE LIFTGATE WINDOW WINDOW DEFOGGER RELEASE GRID SOLENOID REAR WIPER MOTOR MODULE RIGHT CARGO DOOR DEFOGGER GRID RIGHT DOOR CONTACT SWITCH RIGHT FRONT CLEARANCE LAMP RIGHT GAS STRUT CYLINDER RIGHT LEFT LICENSE LICENSE LAMP LAMP RIGHT LICENSE LAMP RIGHT REAR CLEARANCE LAMP RIGHT REAR FENDER RIGHT REAR TAIL, STOP, LICENSE, TURN AND BACKUP LAMPS RIGHT REAR TAIL, STOP, TURN AND BACKUP LAMPS RIGHT TAIL/ STOP, TURN AND BACKUP LAMP SUBURBAN, UTILITY NON-BASE VEHICLE SUBURBAN, UTILITY W/ AUTOMATIC TRANSMISSIONS SUBURBAN/ UTILITY TAN WIRE TAN/WHT WIRE TEMPER- ATURE BLOWER MODE MODE DOOR MOTOR DOOR (REAR) RELAY MOTOR TRAILER) VEHICLE SPEED SENSOR BUFFER W/ REAR AUXILLIARY HEATER ONLY W/HD AUTOMATIC TRANSMISSION) WHT WIRE WHT/ BLK WIRE WITH ENDGATE

BLK WIRE BRN WIRE CONVENIENCE CENTER DK BLU WIRE FOG LAMP ON INDICATOR FOG LAMP RELAY (BEHIND LEFT SIDE OF I/P) FOG LAMP SWITCH SOLID STATE SWITCH FUSE BLOCK GRN WIRE GRY WIRE HEADLAMP DIMMER SWITCH HEADLIGHT SWITCH ASSEMBLY HI BEAM INDICATOR HI LO HOT AT ALL TIMES HOT AT ALL TIMES ACC-BATT CIRCUIT BREAKER ILLUM LAMP LEFT LOW BEAM HEAD- LAMP LT GRN WIRE LT INSTRUMENT CLUSTER LT LT OFF OFF HEAD HEAD PARK ORG/BLK WIRE PARK PNL LPS FUSE PPL PPL PPL RIGHT FOG LAMP LEFT FOG LAMP RIGHT HIGH BEAM HEAD- LAMP LEFT HIGH BEAM HEAD- LAMP RIGHT LOW BEAM HEAD- LAMP TAN WIRE VARIABLE VOLTAGE W/ HEADLIGHT SWITCH IN PARK OR HEAD, RHEOSTAT ADJUSTED WHT WIRE YEL WIRE

ASHTRAY LAMP AUXILIARY A/C-HEATER FRONT CONTROL LAMP BLK WIRE BRN WIRE CONVENIENCE CENTER DK GRN WIRE FOUR-WHEEL DRIVE ILLUMINATION LAMP FUSE BLOCK FUSE BLOCK PNL LPS FUSE GRY WIRE HEADLIGHT SWITCH ASSEMBLY HEATER A/C CONTROL LAMPS HEATER CONTROL LAMPS HIGH DIM HOT AT ALL TIMES INSTRUMENT CLUSTER LIGHT SWITCH OFF HEAD PARK ORG/ WIRE PANEL DIMMER SWITCH (ASSEMBLY) PARK LP FUSE RADIO REAR DEFOGGER LAMP SOLID STATE

ACCY ACCY BULB TEST LOCK OFF AUDIO ALARM AUXILLARY COOLING FAN RELAY BLK WIRE BLK/RED WIRE BRN WIRE BULB TEST CIGARETTE LIGHTER CIRCUIT BREAKER CLUTCH PEDAL SWITCH CONVEN- IENCE CENTER CONVENIENCE CENTER CRANK FUSE CTSY FUSE PARK LPS FUSE DAYTIME RUNNING LAMPS RELAY FUEL PUMP RELAY FUSE BLOCK FUSES FUSIBLE FUSIBLE LINK GENERATOR GLOW PLUG CONTROLLER GRY WIRE HEADLIGHT SWITCH ASSEMBLY HORN RELAY (CONVENIENCE CENTER) HTR-A/C, RR HVAC, IGNITION SWITCH LEFT BATTERY RIGHT BATTERY LINK LOCK LOCK OFF LOW BLOWER MEDIUM HIGH RELAY BLOWER BLOWER RELAY RELAY MODULE OFF ORG/ WIRE PNK WIRE POWERTRAIN FUEL CONTROL PUMP/OIL MODULE PRESSURE (PCM) SWITCH PPL PPL/ WHT WIRE PWR RADIO DOME LAMP REAR WINDOW RELEASE RELAY REAR WINDOW RELEASE SWITCH RED WIRE RR WPR, FRT WPR, RDO FUSES AND AND PWR WDO CIRCUIT BREAKER RUN WIRE STARTER MOTOR SOLENOID STOP FUSE SUBURBAN, UTILITY EXC. SUBURBAN, UTILITY SUBURBAN, UTILITY ONLY T/G REL FUSE DRL FUSE TRANS ECM-IGN, GLOW TURN B/U FUSE PLUGS, GAUGES FUSES W/ AUTO TRANS W/ AUTOMATIC TRANSMISSION WHT PPL/ WIRE YEL WIRE

BLK ORG/ WIRE BLK WIRE BRN WIRE CIRCUIT BREAKER CONVENIENCE CENTER FRT WPR FUSE FUSE BLOCK FUSIBLE LINK IGNITION SWITCH IN-LINE FUSE LEFT FRONT POWER WINDOW SWITCH LEFT POWER SEAT ORG BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE POWER POWER DOOR LOCK RELAY POWER OUTSIDE MIRROR SWITCH PWR WDO CIRCUIT BREAKER RADIO RDO FUSE REAR WINDOW DEFOGGER SWITCH REAR WIPER/ WASHER SWITCH RED WIRE RIGHT FRONT POWER WINDOW SWITCH RIGHT LEFT POWER POWER DOOR LOCK DOOR LOCK SWITCH SWITCH RIGHT LEFT REAR REAR POWER POWER WINDOW WINDOW SWITCH SWITCH RR WPR FUSE SUBURBAN, UTILTY ONLY WHT WIRE WIPER MOTOR MODULE WIPER/ WASHER SWITCH YEL WIRE

A/C CLUTCH RELAY A/C CONTROL MODULE ANTILOCK BRAKE MODULE AUXILLIARY AUXILLIARY HEATER-A/C HEATER-A/C REAR LOGIC CONTROL MODULE AUXILLIARY HEATER-A/C FRONT CONTROL BLU WIRE BRAKE FUSE BRN WIRE BRN/WHT WIRE CONVENIENCE CENTER DK BLU WIRE DK GRN WIRE ELECTRONIC TRANSMISSION 4-SPEED AUTOMATIC W/OVERDRIVE FUSE FUSE BLOCK FUSIBLE LINK GLOW PLUG CONTROL MODULE GLOW PLUG FUSE GRY WIRE HEATER BLOWER SWITCH HEAVY DUTY ELECTRONIC TRANSMISSION 4-SPEED AUTOMATIC W/OVERDRIVE HIGH BLOWER RELAY HTR A/C FUSE IGNITION SWITCH INSTRUMENT CLUSTER PRINTED CIURCUIT LEFT GLOW PLUGS LINK FUSIBLE LOW BLOWER RELAY MED BLOWER RELAY MODE DOOR MOTOR ORG/ WIRE PANEL DIMMER SWITCH ASSEMBLY (INTERIOR LIGHTS SYSTEM) PNK WIRE PNK/BLK WIRE PNK/WHT WIRE PNL LPS FUSE POWERTRAIN CONTROL MODULE RIGHT GLOW PLUGS RR HVAC FUSE TEMP DOOR MOTOR TRANS FUSE TRANSFER CASE SWITCH VEHICLE SPEED SENSOR BUFFER MODULE W/ AIR CONDITIONING