Buick LaCrosse II (2009-2013) right headlamp Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SER DATA COMM 1 3 B+ INT N/W BUS 6 2 4 GND LVL HDLP ERR SIG 2501 740 COMPUTER DATA LINES SYSTEM BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE FUSE GRN/PPL WIRE GROUND HEADLAMP CONTROL MODULE (LOWER LEFT SIDE OF DASH BEHIND BODY CONTROL MODULE) HI SPD GMLAN SER DATA (-) B+ HI SPD GMLAN SER DATA - HOT AT ALL TIMES INT N/W BUS 6 B+ GND LVL HDLP ERR SIG 3 1 2 4 LEFT HEADLAMP LEFT HEADLAMP BALLAST LEFT HEADLAMP HORIZONTAL MOTOR LOGIC NETWORK BUS 6 RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLAMP RIGHT HEADLAMP BALLAST RIGHT HEADLAMP HORIZONTAL MOTOR UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) WHT WIRE YEL WIRE

1 23 24 B+ HI SPD DATA - HI SPD DATA + 10 9 16 NETWORK BUS 3 NETWORK BUS 2 NETWORK BUS 1 22 21 LO SPD DATA NETWORK BUS 4 22 23 WAKEUP SERIAL DATA HOOD AJAR SW SIG 24 25 HI SPD DATA + HI SPD DATA - BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE COMPASS MODULE DK BLU WIRE DRIVER WINDOW MOTOR (DRIVER'S DOOR) DRIVER WINDOW SWITCH GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PPL WIRE GRN/YEL WIRE IMMOBILIZER CONTROL MODULE (CENTER CONSOLE) INT N/W BUS 6 LEFT HEADLAMP LEFT HEADLAMP HORIZONTAL MOTOR LEFT REAR WINDOW SWITCH LT BLU/VIO (GRN/PPL) WIRE NETWORK BUS 1 NETWORK BUS 11 NETWORK BUS 2 NETWORK BUS 3 NETWORK BUS 4 PASSENGER WINDOW MOTOR (FRONT PASSENGER'S DOOR) RED/WHT WIRE RIGHT HEADLAMP RIGHT HEADLAMP HORIZONTAL MOTOR RIGHT REAR WINDOW SWITCH SUNROOF CONTROL MODULE (IF EQUIPPED) (BEHIND ROOF CONSOLE) SUNROOF SUNSHADE MOTOR MODULE (IF EQUIPPED) (REAR OF SUNROOF) TRANSMISSION SHIFT LEVER POSITION INDICATOR VIO/YEL WIRE W/ COMPASS DISPLAY W/O ONSTAR W/ KEYLESS ENGINE START SWITCH WHT WIRE WHT/DK BLU WIRE

BATTERY BLK WIRE BODY CONTROL MODULE BRAKE BOOSTER PUMP MOTOR RELAY BRN WIRE COOLING FAN RELAY DOOR LOCK RELAY GRY/BLU WIRE HOOD AJAR SWITCH HORN ASSEMBLY IGNITION COIL 5 IGNITION COIL 6 IGNITION IGNITION COIL 1 COIL 3 IGNITION IGNITION COIL 2 COIL 4 IGNITION MAIN RELAY LEFT COOLING FAN DIODE LEFT DAYTIME RUNNING LAMP, LEFT FRONT FOG LAMP LEFT HEADLAMP LEFT HEADLAMP BALLAST LEFT LEFT PARK/ FRONT TURN SIDE SIGNAL MARKER LAMP LAMP LOW SPEED COOLING FAN DIODE PASSENGER PRESENCE (PASSENGER SEAT HARNESS, DETECTION MODULE APPROXIMATELY PASSENGER WINDOW MOTOR RESTRAINT SENSING, DIAGNOSTIC MODULE) RIGHT COOLING FAN DIODE RIGHT HEADLAMP RIGHT REAR WINDOW SWITCH RIGHT RIGHT PARK/ FRONT TURN SIDE SIGNAL MARKER LAMP LAMP W/ FRONT FOG LAMPS W/ FRONT W/O FRONT FOG LAMP FOG LAMP, HID, HID W/ HID W/ HID LEFT LEFT HIGH HEADLAMP BEAM HORIZONTAL SOLENOID MOTOR ACTUATOR W/ HID W/O HID W/O FRONT W/ FRONT FOG LAMPS FOG LAMPS W/O HID WINDSHIELD WASHER FLUID LEVER SENSOR WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER RELAY

1 2 33 32 RF DRL SPLY VOLT LF DRL SPLY VOLT 2 3 2540 2140 B+ B+ 22 10 5060 278 LOW SPD GMLAN SER DATA AMBIENT LIGHT SENS SIG 22 11 16 13 306 103 HDLP SW PARK LP SIG ADAPTIVE FRONT LIGHTING CIRCUIT AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL, SOUND SYSTEMS DK BLU WIRE DK BLU/BRN WIRE FRONT FOG LAMP FUSE FUSE FUSE GRN WIRE GRY WIRE GRY/DK BLU WIRE HDLP DIMMER SW HI BEAM SIG HDLP OFF SIG CTRL HDLP SW ON SIG HDLP SW FLASH TO PASS SIG HEADLAMP HIGH BEAM RELAY HEADLAMP LOW BEAM RELAY 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 DAYTIME RUNNING LAMP (BOTTOM OF "A" PILLAR) LEFT HEADLAMP LEFT HIGH BEAM SOLENOID ACTUATOR LEFT LOW BEAM HEADLAMP LIGHTING CTRL SW REF LIGHTING CTRL SW SIG LOW REF LT GRN WIRE NCA WIRE RED WIRE RED/BLK WIRE RELAY RIGHT DAYTIME RUNNING LAMP RIGHT HEADLAMP RIGHT HEADLAMP BALLAST RIGHT HIGH BEAM SOLENOID ACTUATOR RIGHT LOW BEAM HEADLAMP TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE WHT WIRE YEL 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

3.0L, 3.6L 2.4L BATTERY BATTERY FUSE BLOCK (TOP OF BATTERY) BODY CONTROL MODULE BRAKE BOOSTER PUMP MOTOR RELAY CONTROL SOLENOID VALVE ASSEMBLY DK BLU WIRE DRIVER PASSENGER WINDOW WINDOW MOTOR MOTOR DRIVER SEAT POWER LUMBAR STEERING SUPPORT CONTROL SWITCH MODULE (IF EQUIPPED) ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE EVAPORATIVE EMISSION VENT SOLENOID VALVE FUEL AUDIO PUMP AMPLIFIER CONTROL (PREMIUM MODULE AUDIO) FUSE FUSE 1 FUSE 2 FUSE FUSE GENERATOR HEADLAMP CONTROL MODULE (IF EQUIPPED) LEFT HEADLAMP LEFT HEADLAMP HORIZONTAL MOTOR (IF EQUIPPED) LEFT REAR WINDOW SWITCH LT GRN WIRE PARKING ELECTRONIC BRAKE BRAKE CONTROL CONTROL MODULE MODULE POWER STEERING CONTROL MODULE (IF EQUIPPED) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/DK BLU WIRE RED/DK GRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLAMP RIGHT HEADLAMP HORIZONTAL MOTOR (IF EQUIPPED) RIGHT REAR WINDOW SWITCH SEAT SEAT HEATING MEMORY CONTROL CONTROL MODULE MODULE STARTER MOTOR STARTER RELAY SUNROOF CONTROL MODULE (IF EQUIPPED) SUNROOF SUNSHADE MOTOR MODULE (IF EQUIPPED) TO IGNITION MAIN RELAY (DIAGRAM 2 OF 5) FUSE TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 2 OF 5) TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 3 OF 5) TO REAR BODY FUSE BLOCK (DIAGRAM 4 OF 5) UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) W/ W/O MEMORY MEMORY