Buick Regal V (2009-2013) headlamp switch Wiring diagrams

1 22 17 19 GROUND HEADLAMP SW PARK LP SIG HAZ LED DIMMING SIG LO REF 12 24 HAZ SW LEFT TURN SIG HAZ SW RIGHT TURN SIG 26 13 7 22 HAZ SW SIG 5 VOLT REF BRK APPLY SENS SIG LO SPD GMLAN SER DATA BLK WIRE BLK/BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) CENTER HIGH MOUNTED STOP LAMP COMPUTER DATA LINES SYSTEM EARLY PRODUCTION, GERMAN MADE GRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/VIO WIRE GRY/YEL WIRE HAZARD SWITCH HEAD PARK AUTO HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) FUSE 2 INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LEFT LICENSE PLATE LAMP OFF REAR LICENSE LP SPLY VOLT RED/GRY WIRE RIGHT FRONT SIDE MARKER LAMP RIGHT FRONT PARK LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT HEADLAMP RIGHT LICENSE PLATE LAMP RIGHT OUTER TAIL LAMP RIGHT INNER TAIL LAMP RIGHT STOP/ TURN SIGNAL LAMP RIGHT TAIL LAMP ASSEMBLY VIO/BLU WIRE VIO/GRY WIRE WHT WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE

1 22 17 19 GROUND HEADLAMP SW PARK LP SIG HAZ LED DIMMING SIG LO REF 12 24 HAZ SW LEFT TURN SIG HAZ SW RIGHT TURN SIG 26 13 7 22 HAZ SW SIG 5 VOLT REF BRK APPLY SENS SIG LO SPD GMLAN SER DATA BLK WIRE BLK/BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) CENTER HIGH MOUNTED STOP LAMP COMPUTER DATA LINES SYSTEM EARLY PRODUCTION, GERMAN MADE FUSE 2 GRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/VIO WIRE GRY/YEL WIRE HAZARD SWITCH HEAD PARK AUTO HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LEFT LICENSE PLATE LAMP OFF REAR LICENSE LP SPLY VOLT RED/GRY WIRE RIGHT FRONT SIDE MARKER LAMP RIGHT PARK/ TURN SIGNAL LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT HEADLAMP RIGHT LICENSE PLATE LAMP RIGHT OUTER TAIL LAMP RIGHT INNER TAIL LAMP RIGHT STOP/ TURN SIGNAL LAMP RIGHT TAIL LAMP ASSEMBLY VIO/BLU WIRE VIO/GRY WIRE WHT WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE

BATTERY SAVER RELAY 1 BLK WIRE BODY CONTROL MODULE CENTER ACCESSORY CONSOLE DC/AC ACCESSORY POWER POWER INVERTER RECEPTACLE MODULE DATA LINK CONNECTOR DRIVER SEAT LUMBAR SUPPORT VALVE ASSEMBLY HEADLAMP SWITCH HORN SWITCH HVAC CONTROL MODULE HVAC CONTROLS INSTRUMENT CLUSTER INSTRUMENT PANEL BLOWER MOTOR ACCESSORY CONTROL POWER MODULE RECEPTACLE INSTRUMENT PANEL COMPARTMENT LAMP INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LEFT INSTRUMENT PANEL COURTESY LAMP PARK BRAKE CONTROL SWITCH PARKING ASSIST ON/OFF SWITCH PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT LUMBAR SUPPORT PUMP PNK WIRE RED WIRE RETAINED ACCESSORY POWER RELAY RIGHT INSTRUMENT INSTRUMENT PANEL PANEL MULTI-FUNCTION COURTESY SWITCH 2 LAMP RIGHT LEFT STEERING STEERING WHEEL WHEEL CONTROLS CONTROLS SWITCH SWITCH SEAT HEATING CONTROL MODULE STEERING WHEEL AIR BAG COIL STEERING WHEEL ANGLE SENSOR TRANSMISSION MANUAL SHIFT SWITCH TRANSMISSION SHIFT LEVER PARK POSITION SWITCH TRANSMISSION SHIFT LEVER POSITION INDICATOR TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR TURN SIGNAL/ MULTI-FUNCTION SWITCH W/ FRONT REAR 110 VOLT RECEPTACLE W/ RIGHT POWER LUMBAR CONTROL SEAT

2500 2501 1134 COMPUTER DATA LINES SYSTEM AUTO BATTERY FUSE BLOCK (TOP OF BATTERY) BLK WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BRN WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL, SOUND SYSTEMS DIMMER SWITCH EARLY PRODUCTION LATE PRODUCTION FOG LAMP SWITCH FRONT FOG LAMP IND FUSE GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GROUND GRY/RED WIRE HEAD PARK HEADLAMP SWITCH HIGH BEAM LAMP IND HOT AT ALL TIMES IGN INSTRUMENT CLUSTER LEFT FRONT FOG LAMP LOGIC LOW SPD GMLAN SER DATA OFF PARK BRAKE CONTROL SWITCH PARK BRK APPLY SW SIG PARK BRK RELEASE SW SIG PARK BRK RELEASE SW VOL REF PARK BRK SW SPLY VOLT PARKING BRAKE CONTROL MODULE (BEHIND LEFT REAR WHEEL LINER) RED WIRE RIGHT FRONT FOG LAMP VIO/YEL WIRE WHT WIRE WHT/BRN 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 AIR CONDITIONING SYSTEM AMBIENT LIGHT SENS SIG AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) AUTO OFF BLK WIRE BLU WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/BLK WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL, SOUND SYSTEMS DIMMER SWITCH DRIVER INFOR- MATION CENTER DISPLAY LOGIC INSTRUMENT CLUSTER ENGINE COMPT) FOG LAMP RLY CTRL FOG LAMP SWITCH FRONT FOG LAMP IND FRONT FOG LAMP RELAY FTP FUSE FUSE 48 FUSE FUSE GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GROUND GRY WIRE HDLP OFF SIG CTRL HDLP SW ON SIG HEAD HEADLAMP HIGH BEAM RELAY HEADLAMP SWITCH HIGH BEAM LAMP IND HIGH LOW HOT AT ALL TIMES HOT AT ALL TIMES BATTERY FUSE BLOCK (TOP OF BATTERY) HOT W/ IGNITION RUN RELAY ENERGIZED HS SPD GMLAN SER DATA- HS SPD GMLAN SER DATA+ HVAC CONTROL MODULE (BEHIND CENTER OF DASH, ON HVAC ASSEMBLY) IGN INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT FRONT FOG LAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LIGHTING CTRL SW REF LIGHTING CTRL SW SIG LOW REF LOW SPD GMLAN SER DATA ORG/BLK WIRE PARK AUTO OFF HEAD PARK RED WIRE RED/BLK WIRE RIGHT FRONT FOG LAMP RIGHT HEADLAMP LEFT HEADLAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VIO/YEL WIRE WHT WIRE WHT/BRN WIRE YEL WIRE

22 5 HDLP SW PARK LP SIG IND DIMM CTRL 23 24 HS SPD GMLAN- HS SPD GMLAN+ 2501 2500 COMPUTER DATA LINES SYSTEM AUTO BATT + BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BUS - BUS 10 BUS 2 BUS 4 COMPUTER DATA LINES SYSTEM DOME/ READING LAMPS DRIVER WINDOW SWITCH EARLY PRODUCTION LATE PRODUCTION FUSE GRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/VIO WIRE HEAD HEADLAMP SWITCH HOT AT ALL TIMES HVAC CONTROLS INSTRUMENT CLUSTER INSTRUMENT PANEL ACCESSORY POWER RECEPTACLE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 INSTRUMENT PANEL MULTI-FUNCTION SWITCH 2 LED BACKLIGHT DIMM CONTROL LEFT REAR WINDOW SWITCH LEFT STEERING WHEEL CONTROL SWITCH LOGIC NET WORK NET WORK BUS 3 NET WORK BUS 4 NET WORK BUS 9 LOGIC OFF OVERHEAD CONSOLE PARK PARK BRAKE CONTROL SWITCH (ON PARK BRAKE ASSEMBLY) PARKING ASSIST ON/OFF SWITCH PASSENGER COMPARTMENT) PASSENGER WINDOW SWITCH OUTSIDE REARVIEW MIRROR SWITCH PNK WIRE RADIO CONTROL MULTI-FUNCTION SWITCH RADIO CONTROLS REAR DOME READING LAMPS RIGHT REAR WINDOW SWITCH RIGHT STEERING WHEEL CONTROL SWITCH SERIAL DATA LOGIC SPORT STEERING WHEEL AIR BAG COIL SUNROOF SWITCH (IF EQUIPPED) SUNROOF TILT SWITCH TOUR TRANSMISSION SHIFT LEVER POSITION INDICATOR W/ ELECTRONIC SUSPENSION WHT WIRE YEL WIRE

AMPLIFIER CTRL AUDIO SIG (3) AUX AUDIO SCREEN AUX DET SIG AUXILIARY AUDIO INPUT (W/ AUDIO INTERFACE) BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/BLU WIRE BRN/WHT WIRE CENTER SIG CENTER STACK HIGH COMPUTER DATA LINES SYSTEM GMLAN SERIAL DATA GRN WIRE GRY WIRE GRY/GRN WIRE HEADLAMP SWITCH LADDER SIG 1 LEFT AUX SIG LEFT STEERING WHEEL CONTROLS SWITCH LF LO LVL SIG LO LVL SIG (-) LOW REF LR LO LVL SIG MUTE VOICE NCA WIRE NETWORK BUS ORG/ WIRE RADIO RED/GRN WIRE REMOTE ENABLE SIG RF LO LVL SIG RIGHT AUX SIG RIGHT STEERING WHEEL CONTROLS SWITCH RR LO LVL SIG SEEK UP SERIAL DATA SOURCE SEEK DOWN STACK LOW STACK RESET SIG STACK SHIELD STEERING WHEEL AIR BAG COIL SW REF VIO WIRE VOICE SIG VOL VOL WHT WIRE WHT/RED WIRE YEL WIRE

AUDIO SIG (3) AUX AUDIO SCREEN AUX DET SIG AUXILIARY AUDIO INPUT (W/ AUDIO INTERFACE) BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/BLU WIRE CENTER SIG CENTER STACK HIGH COMPUTER DATA LINES SYSTEM GMLAN SERIAL DATA GRN WIRE GRY WIRE GRY/GRN WIRE HEADLAMP SWITCH LADDER SIG 1 LEFT AUX SIG LEFT STEERING WHEEL CONTROLS SWITCH LF SPEAKER (+) LF SPEAKER SIG (-) LOW REF LR SPEAKER (+) LR SPEAKER SIG (-) MUTE NCA WIRE NETWORK BUS ORG/ WIRE RADIO RED/GRN WIRE RF SPEAKER (+) RF SPEAKER SIG (-) RIGHT AUX SIG RIGHT STEERING WHEEL CONTROLS SWITCH RR SPEAKER (+) RR SPEAKER SIG (-) SEEK UP SERIAL DATA SOURCE SEEK DOWN STACK DATA LOW STACK RESET SIG STACK SHIELD STEERING WHEEL AIR BAG COIL SW REF VIO WIRE VOICE VOICE SIG VOL VOL WHT WIRE WHT/RED WIRE YEL WIRE

BLK WIRE BLU/BLK WIRE BLU/VIO WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRAKE WEAR IND BRK FLUID LVL BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER (DIC) DISPLAY EARLY PRODUCTION LATE PRODUCTION ELECTRONIC BRAKE CONTROL MODULE FUSE 22 FUSE 23 GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRY/RED WIRE HEAD PARK AUTO OFF HEADLAMP SW PARK LP SIG HEADLAMP SWITCH HOT AT ALL TIMES IGNITION SWITCH INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LO SPD GMLAN SERIAL DATA LOGIC LOW TIRE PRESSURE IND OF CLUSTER) OFF KEY IN IGNITION SWITCH OFF/RUN/CRANK VOLT ORG/ WIRE PARK BRAKE CONTROL SWITCH PARK BRK APPLY SW SIG PARK BRK RELEASE SW SIG PARK BRK SW SPLY VOLT PARK BRK APPLY SW VOLT REF PARKING BRAKE CONTROL MODULE (BEHIND LEFT REAR WHEEL LINER) RED/WHT WIRE RUN WIRE RUN/CRANK SEAT BELT IND LP SERIAL DATA VIO WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE VOL REF PARK BRK SW SIG WHT WIRE WHT/BLU WIRE YEL WIRE YEL/RED WIRE