GMC Pickup C3500 (1985-2000) hot at all times 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

BLK WIRE BRN WIRE BULB CHECK DAYTIME RUNNING LAMP INDICATOR DAYTIME RUNNING LAMPS MODULE (BEHIND LEFT SIDE OF I/P) DAYTIME RUNNING LAMPS RELAY (ENGINE COMPARTMENT FRONT PLENUM PANEL) DK BLU/WHT WIRE DRL FUSE FUSE BLOCK GRN WIRE HEAD PARK HEADLAMP DIMMER SWITCH HEADLIGHT SWITCH ASSEMBLY HI BEAM INDICATOR HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START GAUGES FUSE HTR A/C FUSE IGNITION LAMP FEED HI BEAM FEED HI BEAM INDICATOR OUTPUT TO RELAY GROUND INSTRUMENT CLUSTER LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LT GRN WIRE LT GRN/BLK WIRE LT LT OFF OFF HEAD ORG/ WIRE PARK PARK BRAKE WARNING SWITCH (AT PARK BRAKE, UNDER LEFT SIDE OF I/P) PICKUP ONLY PNK/BLK WIRE RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP SUBURBAN, UTILITY ONLY TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE

BLK WIRE BRN WIRE BULB CHECK DAYTIME RUNNING LAMP INDICATOR DAYTIME RUNNING LAMPS MODULE (BEHIND LEFT SIDE OF I/P) DAYTIME RUNNING LAMPS RELAY (ENGINE COMPARTMENT FRONT PLENUM PANEL) DK BLU/WHT WIRE DRL FUSE FUSE BLOCK GRN WIRE HEAD PARK HEADLAMP DIMMER SWITCH HEADLIGHT SWITCH ASSEMBLY HI BEAM INDICATOR HI LO HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START GAUGES FUSE HTR A/C FUSE IGNITION LAMP FEED HI BEAM FEED HI BEAM INDICATOR OUTPUT TO RELAY GROUND INSTRUMENT CLUSTER LEFT HEADLAMP ASSEMBLY LT GRN WIRE LT GRN/BLK WIRE LT LT OFF OFF HEAD ORG/ WIRE PARK PARK BRAKE WARNING SWITCH (AT PARK BRAKE, UNDER LEFT SIDE OF I/P) PICKUP ONLY PNK/BLK WIRE RIGHT HEADLAMP ASSEMBLY SUBURBAN, UTILITY ONLY TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE

BLK WIRE GRN WIRE HEADLAMP DIMMER SWITCH HEADLIGHT SWITCH ASSEMBLY HI BEAM INDICATOR HI LO HOT AT ALL TIMES LEFT HEADLAMP ASSEMBLY LO HI LT GRN WIRE LT INSTRUMENT CLUSTER OFF OFF HEAD HEAD PARK PARK RIGHT HEADLAMP ASSEMBLY TAN WIRE YEL WIRE

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

BASE BLK WIRE BODY CONTROL MODULE (IN CENTER CONSOLE) CONVENIENCE CENTER (UNDER LEFT SIDE OF DASH) DK GRN WIRE HORN FUSE HORN SWITCH HOT AT ALL TIMES LEFT HORN (FRONT OF VEHICLE) RIGHT HORN LUXURY LUXURY BASE ORG/ WIRE REMOTE CONTROL DOOR LOCK RECEIVER (BEHIND CENTER OF DASH) STEERING WHEEL HORN SLIP RING UNDERHOOD FUSE BLOCK (LEFT REAR OF ENGINE COMPT) UNDERHOOD FUSE BLOCK HORN RELAY VEHICLE INTERFACE UNIT RECEIVER (UNDER- NEATH RIGHT REAR SEAT)

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

BLK WIRE BRN WIRE COLUMN HARNESS BREAKOUT) ENDGATE MARKER LAMPS EXTERIOR LAMPS CIRCUIT FROM TRAILER HARNESS BREAKOUT) HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES I/P FUSE BLOCK LEFT REAR CLEAR- ANCE LAMP LEFT FRONT CLEAR- ANCE LAMP LEFT REAR FENDER LEFT TAIL/ STOP/ TURN LAMP OFF ORG/ WIRE PARK PARK LPS FUSE 9 RHEO- STAT RIGHT FRONT CLEAR- ANCE LAMP RIGHT REAR CLEAR- ANCE LAMP RIGHT REAR FENDER RIGHT TAIL/ STOP/ TURN LAMP