GMC Pickup C2500 (1985-2000) blk Wiring diagrams

ANTENNA ANTENNA INPUT BLK WIRE BRN WIRE COAXIAL CABLE CTSY FUSE DK GRN WIRE FUSE BLOCK (UNDER LEFT SIDE OF DASH) GRY WIRE HOT AT ALL TIMES HOT IN ACCY OR RUN IGN MEMORY(BAT) LEFT FRONT SPEAKER LT FRT SPKR LT FRT SPKR RT FRT SPKR RT FRT SPKR GROUND PARK LAMP DIMMER LT GRN WIRE ORG/ WIRE RADIO RADIO FUSE RIGHT FRONT SPEAKER TAN WIRE YEL WIRE

BAT VOLT SENSE INPUT BATTERY JUNCTION BLOCK BLK WIRE BRN WIRE CHARGE INDICATOR FIELD (ROTOR) FUSE BLOCK FUSIBLE LINK (12 GA. RUST) GAUGES FUSE GENERATOR (TOP LEFT FRONT OF OF ENGINE) HOT IN RUN, BULB TEST OR START INDICATORS LEFT BATTERY PNK INSTRUMENT CLUSTER WIRE PNK WIRE RECTIFIER BRIDGE RED WIRE RED/BLK WIRE REGULATOR (SOLID STATE) RIGHT BATTERY STARTER SOLENOID (LOWER RIGHT REAR OF ENGINE, ON STARTER MOTOR) SW BAT TURN ON INPUT W/DIESEL ENGINE W/GASOLINE ENGINE W/DIESEL ENGINE

ACCY BATTERY JUNCTION BLOCK BLK WIRE BULB TEST CLUTCH START SWITCH (NORMALLY,OPEN CLOSES WHEN CLUTCH PEDAL IS DEPRESSED) (AT TOP OF CLUTCH PEDAL) FUSE BLOCK FUSIBLE LINK (12 GA. RUST) FUSIBLE LINK (16 GA- IGNITION SWITCH LEFT BATTERY LOCK OFF PPL PPL PPL CRANK FUSE (LOWER LEFT SIDE OF INSTRUMENT PANEL) PWR ACC CIRCUIT BREAKER RED WIRE RIGHT BATTERY RUN WIRE STARTER MOTOR STOP- HZ FUSE W/AUTO TRANS W/MAN TRANS YEL WIRE

BAT VOLT SENSE INPUT BATTERY JUNCTION BLOCK BLK WIRE BRN WIRE CHARGE INDICATOR FIELD (ROTOR) FUSE BLOCK FUSIBLE LINK (12 GA. RUST) GAUGES FUSE GENERATOR (TOP LEFT FRONT OF OF ENGINE) HOT IN RUN, BULB TEST OR START INDICATORS LEFT BATTERY PNK INSTRUMENT CLUSTER WIRE PNK WIRE RECTIFIER BRIDGE RED WIRE RED/BLK WIRE REGULATOR (SOLID STATE) RIGHT BATTERY STARTER SOLENOID (LOWER RIGHT REAR OF ENGINE, ON STARTER MOTOR) SW BAT TURN ON INPUT W/DIESEL ENGINE W/GASOLINE ENGINE W/DIESEL ENGINE

1 2 3 4 RF (+) RF (-) LF (+) LF (-) 17 18 19 20 RR (-) RR (+) LR (-) LR (+) 5 6 7 8 9 10 GROUND PARK LAMP DIMMER ANTENNA OUT IGNITION MEMORY ANTENNA BLK WIRE BLU WIRE BRN WIRE CASSETTE DECK CTSY FUSE DK BLU WIRE DK GRN WIRE FUSE BLOCK (UNDER LEFT SIDE OF DASH) GRAPHIC EQUALIZER GROUND PARK LAMP DIMMER IGNITION MEM (DATA) DATA GRY WIRE HOT AT ALL TIMES HOT IN ACCY OR RUN LEFT FRONT SPEAKER LEFT REAR SPEAKER LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/WHT WIRE PNK WIRE POWER ANTENNA SYSTEM PPL RADIO CONTROL HEAD RADIO FUSE RADIO RECEIVER RED WIRE RED/WHT WIRE RIGHT FRONT SPEAKER RIGHT REAR SPEAKER TAN WIRE WHT WIRE YEL WIRE

1 2 3 4 RF (+) RF (-) LF (+) LF (-) 17 18 19 20 RR (-) RR (+) LR (-) LR (+) 5 6 7 8 9 10 GROUND PARK LAMP DIMMER ANTENNA OUT IGNITION MEMORY ANTENNA BLK WIRE BLU WIRE BRN WIRE CASSETTE DECK CONVENIENCE CENTER (UNDER LEFT SIDE OF DASH) CTSY FUSE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUSE BLOCK (UNDER LEFT SIDE OF DASH) GRAPHIC EQUALIZER GROUND PARK LAMP DIMMER IGNITION MEM (DATA) DATA GRY WIRE HOT AT ALL TIMES HOT IN ACCY OR RUN INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM LEFT FRONT SPEAKER LEFT REAR SIDE DOOR SPEAKER LEFT REAR SPEAKER LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE LT RR DOOR SPKR AMPLIFIER RELAY GROUND LT RR DOOR SPKR NOT USED LT RR SPKR LT RR SPKR RT RR DOOR SPKR NOT USED NOT USED ORG/ WIRE ORG/WHT WIRE PNK WIRE POWER AMPLIFIER RELAY (UNDER DASH, LEFT OF PEDAL BRACKET) PPL RADIO CONTROL HEAD RADIO FUSE RADIO POWER AMPLIFIER (UNDER DRIVER'S SEAT) RADIO RECEIVER RED WIRE RED/WHT WIRE RIGHT FRONT SPEAKER RIGHT REAR SIDE DOOR SPEAKER RIGHT REAR SPEAKER RT RR DOOR SPKR NOT USED NOT USED RT RR SPKR RT RR SPKR TAN WIRE WHT WIRE YEL WIRE

AUTOMATIC DAY-NIGHT HEATING SENSOR ELEMENT (UPPER (UPPER LEVEL) LEVEL) BLK WIRE BLU WIRE BRN WIRE CTSY FUSE 3 DOWN ELECTRO- DEFOGGER CHROMIC SYSTEM MIRROR (HEATED CIRCUIT MIRROR) GRN WIRE GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK LEFT LEFT POWER OUTSIDE REARVIEW MIRROR LEFT/ RIGHT MOTOR LT GRN WIRE LT LT (OR (OR ORG/ WIRE PNK WIRE POWER OUTSIDE REARVIEW MIRROR SWITCH PPL PPL/WHT WIRE RED (OR YEL) WIRE RED WIRE RIGHT RIGHT POWER OUTSIDE REARVIEW MIRROR UP/ DOWN MOTOR WHT WIRE YEL WIRE

BACK BLK WIRE CONVENIENCE CENTER CONVENIENCE CENTER (UNDER LEFT SIDE OF I/P) DK BLU WIRE DK GRN WIRE DOWN DOWN ENTIRE SEAT ENTIRE SEAT DOWN FOR- WARD FORWARD/ REARWARD MOTOR REAR TILT MOTOR FRONT TILT MOTOR FUSE BLOCK HOT AT ALL TIMES ACC-BATT CIRCUIT BREAKER LT BLU WIRE ORG/BLK WIRE POWER SEAT SWITCH (LEFT SIDE OF DRIVER'S SEAT) REAR HEIGHT FRONT HEIGHT FRONT HEIGHT TAN WIRE UP REAR HEIGHT YEL WIRE

BLK WIRE BRN WIRE CONVENIENCE CENTER DK BLU WIRE FUSE BLOCK LEFT FRONT POWER WINDOW MOTOR LEFT FRONT SWITCH LEFT POWER WINDOW MASTER SWITCH PNK WIRE RIGHT FRONT POWER WINDOW MOTOR RIGHT FRONT SWITCH RIGHT FRONT WINDOW SWITCH TAN WIRE UP DN WHT WIRE

BLK WIRE BRN WIRE CONVENIENCE CENTER DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE FUSE BLOCK GAUGES FUSE GRY WIRE HOT IN RUN OR START LEFT FRONT POWER WINDOW MOTOR LEFT FRONT WINDOW UP LEFT REAR POWER WINDOW MOTOR LEFT REAR WINDOW DN UP LEFT REAR WINDOW SWITCH LT GRN WIRE MASTER WINDOW SWITCH PNK WIRE PNK/BLK WIRE PPL PPL PPL PPL/WHT WIRE RIGHT FRONT POWER WINDOW MOTOR RIGHT FRONT WINDOW DN UP RIGHT FRONT WINDOW SWITCH RIGHT REAR POWER WINDOW MOTOR RIGHT REAR WINDOW SWITCH RIGHT REAR WINDOW UP SWITCH ILLUMINATION LAMP TAN WIRE UP DN