Buick LaCrosse II (2009-2013) dimmer switch Wiring diagrams

7 2 TRUNK LP CTRL INADVERTENT PWR CTRL BATT POS VOLT BLK WIRE BLOCK, LEFT TAIL LAMP) BODY CONTROL MODULE (LEFT SIDE OF DASH) CENTER CONSOLE COMPARTMENT CENTER CONSOLE COMPARTMENT LAMP COMPUTER DATA LINES SYSTEM COURTESY LAMP COURTESY LP SW SIG CRUISE CONTROL, SOUND SYSTEMS DIMMER SWITCH DRIVER DOOR COURTESY PASSENGER DOOR COURTESY FOG LAMP SWITCH FRONT DOME/ READING LAMPS FUSE FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/LT GRN WIRE HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT ILLUMINATION CIRCUIT INSTRUMENT PANEL COMPARTMENT LAMP INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT FUSE SIDE OF DASH) INTR LP CTRL INTR LP DEFEAT SW SIG LAMP LAMP LAMP LAMP SWITCH LED AMBIENT LIGHTING CTRL LEFT REAR DOOR COURTESY LEFT SUNSHADE MIRROR LIFT GATE AJAR SW SIG LIGHTING CTRL SW SIG LIGHTING CTRL SW REF LT GRN/GRY WIRE NETWORK BUS 3 NETWORK BUS 4 ORG/ WIRE READING LAMPS REAR COMPARTMENT COURTESY LAMP REAR COMPARTMENT LID LATCH (IN TRUNK LID) RED WIRE RED/BRN WIRE RED/DK GRN WIRE RED/LT GRN WIRE RIGHT INSTRUMENT PANEL RIGHT REAR DOOR COURTESY RIGHT SUNSHADE MIRROR LAMP VIO/BRN WIRE VIO/GRY WIRE WHT WIRE WHT/BRN WIRE WHT/YEL WIRE YEL WIRE

AUTO BLK WIRE BRN WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DIMMER SWITCH DK BLU WIRE DK BLU/BLK WIRE DK BLU/VIO WIRE FOG LAMP SWITCH FRONT FOG LAMP IND GRN WIRE GRY WIRE GRY/RED WIRE HEAD PARK HEADLAMP SWITCH HIGH BEAM LAMP IND INSTRUMENT PANEL CLUSTER LEFT FRONT FOG LAMP LOGIC LOW SPD GMLAN SER DATA LT BLU WIRE LT GRN WIRE OFF PARK BRAKE CONTROL SWITCH PARK BRK RELEASE SW SIG PARK BRK SW SIG PARKING BRAKE CONTROL MODULE (BEHIND LEFT REAR WHEEL LINER) RIGHT FRONT FOG LAMP VOL REF PARK BRK SPLY VOLT WHT WIRE YEL WIRE YEL/RED WIRE

1 2 RT HDLP LW BEAM SPLY VOLT LT HDLP LW BEAM SPLY VOLT 17 11 HDLP SW FLASH TO PASS SIG HDLP DIMMER SW HI BEAM SIG 18 10 HDLP HI BEAM RLY CTRL 2 3 B+ B+ 22 11 16 HDLP SW PARK LP SIG AMBIENT LIGHT SENS SIG AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) AUTO OFF BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM (FRONT OF AIR FILTER) CRUISE CONTROL, SOUND SYSTEMS DIMMER SWITCH FOG LAMP RLY CTRL FOG LAMP SWITCH FRONT FOG LAMP IND FRONT FOG LAMP RELAY FUSE GRN WIRE HDLP OFF SIG CTRL HDLP SW ON SIG HEAD HEADLAMP HIGH BEAM RELAY HEADLAMP SWITCH HIGH BEAM LAMP IND HIGH LOW FTP HOT AT ALL TIMES HOT AT ALL TIMES BATTERY FUSE BLOCK FUSE (TOP OF BATTERY) HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT FRONT FOG LAMP LEFT HEADLAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LIGHTING CTRL SW REF LIGHTING CTRL SW SIG LOGIC INSTRUMENT PANEL CLUSTER LOW REF LOW SPD GMLAN SER DATA LT GRN WIRE PARK AUTO OFF HEAD PARK RED WIRE RED/BLK WIRE RIGHT FRONT FOG LAMP RIGHT HEADLAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) WHT WIRE YEL WIRE

22 1 SERIAL DATA BATT POS VOLT AIR BAG COIL AUTO BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL, SOUND SYSTEMS DIMMER SWITCH DOME/ READING LAMPS FOG LAMP SWITCH FRONT DOME/ READING LAMPS FUSE GARAGE DOOR OPENER GRN WIRE HDLP SW PARK LP SIG HEAD HEADLAMP SWITCH HEADUP DISPLAY SWITCH (IF EQUIPPED) HORN SWITCH HOT AT ALL TIMES IGNITION MODE SWITCH INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 INSTRUMENT PANEL MULTI-FUNCTION SWITCH 2 LED BACK LEFT STEERING WHEEL CONTROLS SWITCH LIGHT CTRL SW REF LIGHT CTRL SW SIG LIGHT DIMMING CONTROL LT GRN WIRE OFF OUTSIDE REARVIEW MIRROR SWITCH PARK PARK BRAKE CONTROL SWITCH (ON PARK BRAKE ASSEMBLY) PASSENGER WINDOW SWITCH PNK WIRE RED/WHT WIRE RIGHT STEERING WHEEL CONTROLS SWITCH SERIAL DATA LOGIC STEERING WHEEL) SUNROOF SUNSHADE SWITCH SUNROOF SWITCH WHT WIRE YEL WIRE