GMC Forward Control P3500 (1985-1999) (forward lamps harn, Wiring diagrams

A/C COMPRESSOR CLUTCH A/C COMPRESSOR REFRIGERANT PRESSURE SWITCH A/C COMPRESSOR RELAY AUXILARY ENGINE COOLANT FAN MOTOR AUXILIARY ENGINE COOLANT FAN A/C PRESSURE SWITCH BATTERY BLK WIRE BRAIDED STRAP DATA LINK CONNECTOR DAYTIME RUNNING LAMPS CONTROL MODULE DAYTIME RUNNING LAMPS RELAY DIESEL DIFFERENTIAL BREAKOUT) ELECTRONIC BRAKE CONTROL MODULE ENGINE BLOCK) ENGINE COOLANT LEVEL SWITCH FUEL LEVEL SENSOR FUEL PUMP (DIESEL) FUEL PUMP MODULE GAS DIESEL GASOLINE GLOWPLUG RELAY (MECHANICAL) HIGH NOTE HORN STEERING COLUMN HORN BREAKOUT) I/P DIMMER SWITCH SEAT BELT ALARM MODULE I/P FUSE BLOCK BREAKOUT) JUNCTION BLOCK BREAKOUT) LEFT PARK/ TURN SIGNAL LAMP RIGHT PARK/ TURN SIGNAL LAMP LEFT SIDE MARKER LAMP LOW NOTE HORN LEFT HEADLAMP PARK BRAKE INDICATOR SWITCH RIGHT HEADLAMP RIGHT SIDE MARKER LAMP SECONDARY BATTERY (DIESEL ONLY) STARTER RELAY

BLK WIRE BLU WIRE BREAKOUT FOR HEADLAMP SWITCH) BULB TEST DAYTIME RUNNING LAMPS MODULE (ATTACHED TO I/P HARNESS AT STEERING COLUMN) DAYTIME RUNNING LAMPS RELAY (ON MAIN SUPPORT BRACKET AT DRIVER'S ISLAND) DAYTIME RUNNING LAMPS RELAY 2 DIODE NETWORK DK BLU WIRE DK GRN/WHT WIRE DRL INDICATOR FOR LEFT HEADLAMP) FUSIBLE LINK (16 GA- GAUGES FUSE GRN WIRE HEAD- LAMP DIMMER SWITCH HEADLAMPS SWITCH HI BEAM INDICATOR HI LO HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK IGNITION SWITCH INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT HEAD- LAMP LEFT HIGH BEAM HEAD- LAMP LO HI LOCK OFF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PARK BRAKE IN FOG LAMPS PARK BRAKE INDICATOR SWITCH (ON PARK BRAKE) PARK HEAD OFF PNK IGNITION LAMP FEED HI BM FEED HI BM INDICATOR RELAY OUT GROUND WIRE PNK WIRE RED WIRE RIGHT HEAD- LAMP RIGHT HIGH BEAM HEAD- LAMP RUN WIRE TAN WIRE WHT WIRE YEL WIRE