Chevrolet Chevy Express G1500 (1996-2012) headlamp dimmer switch Wiring diagrams

+BC BLK WIRE BODY CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) CLASS 2 SERIAL DATA COMPOSITE SEALED COMPOSITE+ DIMMER SWITCH SIGNAL DK GRN WIRE FLASH TO PASS SIGNAL FTP FUSIBLE LINK 2 GRY WIRE HDLP- HI BEAM RELAY HDLP- LO BEAM RELAY HEAD HEADLAMP DIMMER SWITCH HEADLAMP ON IND HEADLAMP ON SIGNAL HEADLAMP, PANEL DIMMER SWITCH HIGH BEAM INDICATOR HIGH BEAM RELAY CONTROL HOT AT ALL TIMES IGN CLASS 2 INSTRUMENT PANEL CLUSTER LED DIMMING SIGNAL LEFT HI BEAM FUSE 44 LEFT HIGH BEAM HEADLAMP LEFT HEADLAMP LEFT LO BEAM FUSE 43 LEFT LOW BEAM HEADLAMP LOGIC CLASS 2 SERIAL DATA LOW BEAM RELAY CONTROL LT GRN WIRE OFF PARK PNK HEADLAMP ON IND CONTROL WIRE PNK WIRE PNK/WHT WIRE PPL/WHT WIRE RED WIRE RIGHT HEADLAMP RIGHT HI BEAM FUSE 45 RIGHT HIGH BEAM HEADLAMP RIGHT LO BEAM FUSE 42 RIGHT LOW BEAM HEADLAMP SEALED SPLICE PACK TAN WIRE TAN/WHT WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

150 39 PNK WIRE BAT PWR HIGH BEAM OUT BLK WIRE BLK/WHT WIRE BRAKE INDICATOR BRAKE WARNING PARK BRAKE IN GROUND IGN (RUN/ST) DRL RELAY CTRL LOW BEAM OUT DRL FUSE 15 DRL INDICATOR FOG LAMP RELAY FOG LAMP SWITCH FOGLAMP ENABLE RELAY (TAPED TO HARNESS NEAR FOG LAMP SWITCH) GAUGES FUSE 4 GRN WIRE GRY WIRE HEAD OFF PARK HEADLAMP DIMMER SWITCH HI LO HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK (ON LEFT LOWER KICK PANEL) ILLUM INDICATOR INSTRUMENT PANEL CLUSTER (IPC) HEADLAMP SWITCH LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP LOCK OFF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT IGNITION SWITCH NCA WIRE ORG/ WIRE PARK BRAKE SWITCH (NEAR LEFT KICK PANEL, ON PARK BRAKE LEVER) PNK WIRE PPL PPL LT LEFT FOG LAMP REAR FUSE BLOCK (REAR OF DRIVER DOOR) FOG LIGHT FUSE RED WIRE RED/WHT WIRE RIGHT FOG LAMP RIGHT HIGH BEAM HEADLAMP RUN WIRE TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) LIGHTING FUSE WARNING SYSTEMS WHT WIRE YEL WIRE

BLK WIRE BRAKE IND CTRL BRAKE PSI IN DRL RELAY CTRL BULB TEST LOCK OFF DAYTIME RUNNING LAMPS MODULE (UNDER LEFT SIDE OF I/P, TAPED TO I/P HARNESS) DAYTIME RUNNING LAMPS RELAY (UNDER LEFT SIDE OF I/P, ON CONVENIENCE CENTER) DRL DIODE MODULE DRL FUSE 15 DRL INDICATOR FROM 36-PIN LEFT BULKHEAD CONN) BREAKOUT) LT GAUGES FUSE 4 GRN WIRE GROUND HEAD HEADLAMP DIMMER SWITCH HEADLAMP SWITCH HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK (LEFT KICK PANEL) IGNITION SWITCH INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT FORWARD LAMP BREAKOUT TOWARD RIGHT) LEFT FORWARD LAMP BREAKOUT) LEFT HIGH BEAM HEADLAMP LAMP LEFT LOW BEAM HEADLAMP LAMP RIGHT LOW BEAM HEADLAMP LAMP LIGHTING MAXI FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT PPL OFF PARK ORG/ WIRE PARK BRAKE IN IGN KEY STATUS PARK BRAKE WARNING SWITCH (ON PARK BRAKE) PNK IGN (RUN/ST) LAMP FEED WIRE PNK WIRE PPL RED WIRE RIGHT HIGH BEAM HEADLAMP LAMP RUN WIRE TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE-RELAY CENTER (ENGINE COMPT, LEFT FENDER) WHT WIRE YEL WIRE

BLK WIRE BRAKE IND CTRL BRAKE PSI IN DRL RELAY CTRL BULB TEST LOCK OFF DAYTIME RUNNING LAMPS MODULE (UNDER LEFT SIDE OF I/P, TAPED TO I/P HARNESS) DAYTIME RUNNING LAMPS RELAY (UNDER LEFT SIDE OF I/P, ON CONVENIENCE CENTER) DRL DIODE MODULE DRL FUSE 15 DRL INDICATOR FROM 36-PIN LEFT BULKHEAD CONN) BREAKOUT) LT GAUGES FUSE 4 GRN WIRE GROUND HEAD HEADLAMP DIMMER SWITCH HEADLAMP SWITCH HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK (LEFT KICK PANEL) IGNITION SWITCH INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LEFT FORWARD LAMP BREAKOUT TOWARD RIGHT) LEFT FORWARD LAMP BREAKOUT) LEFT HEADLAMP LIGHTING MAXI FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT PPL OFF PARK ORG/ WIRE PARK BRAKE IN IGN KEY STATUS PARK BRAKE WARNING SWITCH (ON PARK BRAKE) PNK IGN (RUN/ST) LAMP FEED WIRE PNK WIRE PPL RED WIRE RIGHT HEADLAMP RUN WIRE TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE-RELAY CENTER (ENGINE COMPT, LEFT FENDER) WHT WIRE YEL WIRE