GMC Cab & Chassis Sierra 3500 (2004-2007) multifunction accessory switch Wiring diagrams

AMBIENT LIGHT SENSOR (ON TOP CENTER OF DASH) (EXC AUTO A/C) AMBIENT LIGHT SUNLOAD SENSOR ASSEMBLY (TOP OF INSTRUMENT PANEL) (AUTO A/C) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) DAYTIME RUNNING LAMP (LEFT) DAYTIME RUNNING LAMP (RIGHT) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRL DEFEAT DRL FUSE DRL RELAY FLASH TO PASS FOG LAMP (LF) FOG LAMP (RF) FOG LAMP SWITCH FOG LP FUSE FOG LP RELAY GASOLINE DIESEL GRY/BLK WIRE HDLP LOW RELAY HDLP-HI RELAY HEAD PARK AUTO HEAD- LAMP - HIGH BEAM (LEFT) HEAD- LAMP - HIGH BEAM (RIGHT) HEAD- LAMP - LOW BEAM (LEFT) HEAD- LAMP - LOW BEAM (RIGHT) HEADLAMP SWITCH HI BM RLY CTRL LO BM RLY CTRL DRL RLY CTRL FOG LP RLY CTRL HI HDLP LT FUSE HI HDLP RT FUSE HI/LO BEAM SELECT HLPS ON SIG FLASH TO PASS PK BRAKE SIG LOW REF HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) LO HDLP LT FUSE LO HDLP RT FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MULTIFUNCTION ACCESSORY SWITCH ORG/ WIRE PARK BRAKE SWITCH (PART OF PARK BRAKE ASSEMBLY) PARK LP SW SIG AMBIENT LT SENS DRL SW SIG FOG LP SW SIG HDLP DIM SW SIG PNK WIRE PNK/WHT WIRE PPL SOUND SYSTEM TAN WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE YEL/BLK WIRE

BEACON INDICATOR BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK GRN/WHT WIRE ELECTRONIC SUSPENSION SYSTEM LOGIC EXTERIOR LAMPS SYSTEM LOGIC FOG LAMP IND I/P RELAY BLOCK (NEAR LEFT KICK PANEL) JUNCTION I/P BLOCK (LOWER LEFT SIDE OF DASH) MULTIFUNCTION ACCESSORY SWITCH PPL PPL/WHT WIRE RIDE INDICATOR ROOF BEACON ROOF BEACON SWITCH SELECTABLE RIDE SELECTABLE RIDE SWITCH SUNROOF SWITCH WHT WIRE WINDOW/DOOR LOCK SWITCH (DRIVER) WINDOW/DOOR LOCK SWITCH (PASSENGER)