Buick LaCrosse II (2009-2013) hot at all times Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LO REF LO REF BLK WIRE BLK/GRY WIRE BLK/RED WIRE BLU/BRN WIRE BRN/BLK WIRE BRN/DK BLU WIRE COMPUTER DATA LINES SYSTEM DK BLU/BLK WIRE DRIVER BACK SEAT HEATING ELEMENT (DRIVER'S SEAT BACK) DRIVER COOLED SEAT SWITCH DRIVER CUSHION SEAT HEATING ELEMENT (DRIVER'S SEAT CUSHION) DRIVER HEATED SEAT SWITCH DRV HTD VOLT FUSE GMLAN SERIAL DATA GRN/BLK WIRE GRN/BLU WIRE GRN/PPL WIRE GRY/BLK WIRE GRY/GRN WIRE HIGH HEAT HIGH HEAT IND HOT AT ALL TIMES IND LO REF LO REF LOCAL NETWORK 10 LOGIC LOW HEAT IND MED HEAT MED HEAT IND PASS HTD VOLT PASSENGER BACK SEAT HEATING ELEMENT (FRONT PASSENGER'S SEAT BACK) PASSENGER COOLED SEAT SWITCH PASSENGER CUSHION SEAT HEATING ELEMENT (FRONT PASSENGER'S SEAT CUSHION) PASSENGER HEATED SEAT SWITCH PNK DRV NTC SIG PASS NTC SIG WIRE PNK WIRE RADIO/HVAC CONTROLS RED/GRN WIRE RED/LT GRN WIRE RED/WHT WIRE SEAT HEATING CONTROL MODULE (UNDER FRONT CENTER OF DRIVER SEAT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) WHT WIRE WHT/GRY WIRE WHT/ORG WIRE WHT/PPL WIRE

BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE FUSE GROUND GRY WIRE HEATED STEERING WHEEL ON IND HEATED STEERING WHEEL SWITCH HOT AT ALL TIMES HTD WHL FUSE IGN 3 VOLT IGNITION LOGIC RADIO/HVAC CONTROLS REAR BODY FUSE BLOCK (ON LEFT REAR WHEELHOUSE) RED WIRE RED/WHT WIRE RELAY RUN RLY COIL CTRL RUN WIRE SENSOR SIG STEERING COLUMN FUSE HOLDER STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATER STEERING WHEEL HEATING CONTROL MODULE (INSIDE STEERING WHEEL) SW LED CTRL SW SIG VIO WIRE VIO/BRN WIRE VOLT REF YEL WIRE

BLK WIRE BLU WIRE BRN WIRE CIRCUIT BREAKER DN FWD DOWN FWD DOWN GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LT GRN WIRE ORG/ WIRE PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT FRONT VERTICAL MOTOR (UNDER LEFT FRONT CORNER OF PASSENGER SEAT) PASSENGER SEAT RECLINE MOTOR (LOWER LEFT SIDE OF FRONT PASSENGER SEAT BACK) RECLINE FWD RECLINE RWD RED WIRE RWD WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 B+ GND SW LOW REF BLK WIRE BRN WIRE CLOSE COMPUTER DATA LINES SYSTEM DK BLU WIRE EXPRESS CLOSE EXPRESS OPEN FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES INTERCONNECT BUS 1 SW DAT 1 LOGIC LT BLU WIRE RED/GRY WIRE RED/WHT WIRE SUNROOF CONTROL MODULE (BEHIND ROOF CONSOLE) SUNROOF SUNSHADE MOTOR MODULE (REAR OF SUNROOF) SUNROOF SUNSHADE SWITCH SUNROOF SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) YEL WIRE

B(+) BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/YEL WIRE BUS 4 COMPUTER DATA LINES SYSTEM DK BLU/GRY WIRE DK BLU/VIO WIRE DK GRN WIRE DOOR LOCKS SYSTEM DOWN DRIVER WINDOW MOTOR (DRIVER'S DOOR) EXPRESS FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT REAR WINDOW MOTOR (LEFT REAR DOOR) LEFT REAR WINDOW SWITCH LF UP SIG LOCK OUT BUS 3 SWITCH LOGIC LOGIC DRIVER WINDOW SWITCH LR DOWN CTRL LR DR AJAR SW SIG LR UP CTRL LT GRN/BLK WIRE LT GRN/VIO WIRE LT GRN/WHT WIRE NETWORK BUS 3 NETWORK BUS 4 PASSENGER WINDOW MOTOR (FRONT PASSENGER'S DOOR) PASSENGER WINDOW SWITCH RED/DK BLU WIRE RED/VIO WIRE RED/WHT WIRE RF DOWN SIG RF DR AJAR SW SIG RF EXPRESS SIG RF UP SIG RIGHT FRONT WINDOW B+ SWITCH RIGHT REAR WINDOW MOTOR (RIGHT REAR DOOR) RIGHT REAR WINDOW SWITCH RR DOWN CTRL RR UP CTRL UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) UNLCK SIG VIO/GRY WIRE W/ MEMORY W/O MEMORY WHT/VIO WIRE YEL/BLK WIRE YEL/BLU WIRE

1 2 3 DISPLAY SIGNAL (-) DISPLAY SIGNAL (+) DRAIN WIRE ANTI-LOCK BRAKES SYSTEM BAT POS VOLT BLK WIRE BLK/GRY WIRE BRN WIRE BRN/DK GRN WIRE CAMERA SIG + MICROPHONE SIG (-) CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX DIMMING CTRL DIMMING CTRL CAMERA SIG 2 MICROPHONE SIG (+) DISPLAY SIG + DK BLU WIRE DK BLU/YEL WIRE DRAIN WIRE DRAIN WIRE NAV DISPLAY + RESET FUSE GROUND GRY WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INFO DISPLAY MODULE (W/ NAVIGATION) INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/YEL WIRE NAV DISPLAY TOUCH - LF SPD SENS SIG NAV TOUCH + NAVIGATION ANTENNA NAVIGATION ANTENNA SIGNAL SPLITTER NAVIGATION SYSTEM NCA WIRE RADIO RADIO ANTENNA RADIO ANTENNA MODULE (BEHIND "C" PILLAR TRIM) RED/DK BLU WIRE RED/VIO WIRE REMOTE ENABLE RESET+ VIDEO SYSTEM CIRCUIT VIO WIRE VIO/BLK WIRE W/ DIGITAL AUDIO SYSTEM W/ REAR SEAT ENTERTAINMENT W/O DIGITAL AUDIO SYSTEM W/O W/ NAVIGATION NAVIGATION WHT WIRE WHT/DK BLU WIRE WHT/LT GRN WIRE WHT/YEL WIRE YEL WIRE

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 LOW LVL AUDIO (-) CENTER AUDIO SIG (-) 8 7 6 5 4 3 2 1 GROUND RIGHT SPEAKER - LEFT REAR SPEAKER - AUDIO AMPLIFIER (RIGHT SIDE OF TRUNK) BATT POS VOLT RIGHT SPEAKER + LEFT REAR SPEAKER + BLK WIRE BRN/DK BLU WIRE BRN/VIO WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/BLK WIRE DK BLU/BRN WIRE DK BLU/GRY WIRE DK BLU/VIO WIRE DK BLU/YEL WIRE FUSE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL CENTER SPEAKER LEFT FRONT DOOR SPEAKER LEFT REAR LEFT FRONT DOOR TWEETER SPEAKER SPEAKER LEFT SUBWOOFER SPEAKER LT GRN WIRE LT GRN/BLK WIRE LT GRN/DK BLU WIRE LT GRN/VIO WIRE LT GRN/YEL WIRE NCA WIRE RED WIRE RED/YEL WIRE RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT REAR LEFT REAR DOOR WINDOW SHELF SPEAKER SPEAKER RIGHT REAR WINDOW SHELF SPEAKER RIGHT SUBWOOFER SPEAKER RR LO LVL SIG (-) LR LO LVL SIG (-) FRT LO LVL SIG (-) LF LO LVL SIG (-) UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/BLK WIRE VIO/DK BLU WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

1 2 3 DISPLAY SIGNAL (-) DISPLAY SIGNAL (+) DRAIN WIRE ANTI-LOCK BRAKES SYSTEM BAT POS VOLT BLK WIRE BLK/GRY WIRE BRN WIRE BRN/DK GRN WIRE CAMERA SIG + MICROPHONE SIG (-) CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX DIMMING CTRL DIMMING CTRL CAMERA SIG 2 MICROPHONE SIG (+) DISPLAY SIG + DK BLU WIRE DK BLU/YEL WIRE DRAIN WIRE DRAIN WIRE NAV DISPLAY + RESET FUSE GROUND GRY WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INFO DISPLAY MODULE (W/ NAVIGATION) INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/YEL WIRE NAV DISPLAY TOUCH - LF SPD SENS SIG NAV TOUCH + NAVIGATION ANTENNA NAVIGATION ANTENNA SIGNAL SPLITTER NAVIGATION SYSTEM NCA WIRE RADIO RADIO ANTENNA RADIO ANTENNA MODULE (BEHIND "C" PILLAR TRIM) RED WIRE RED/DK BLU WIRE RED/VIO WIRE REMOTE ENABLE RESET+ VIDEO SYSTEM CIRCUIT VIO WIRE VIO/BLK WIRE W/ DIGITAL AUDIO SYSTEM W/ NAVIGATION W/ REAR SEAT ENTERTAINMENT W/O DIGITAL AUDIO SYSTEM W/O NAVIGATION WHT WIRE WHT/DK BLU WIRE WHT/LT GRN WIRE WHT/YEL WIRE YEL WIRE

1 2 3 4 5 6 7 8 GND BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) COIL CTRL EXPRESS SIG OPEN SIG CLOSE SIG FUSE HOT AT ALL TIMES IGNITION MAIN RELAY INSTRUMENT PANEL MULTI-FUNCTION SWITCH 2 LOGIC LT GRN WIRE LT GRN/VIO WIRE LT GRN/WHT WIRE PNK IGN 1 VOLT SPLY VOLT WIRE POWER DISTRIBUTION SYSTEM PPL PPL PPL REAR BODY FUSE BLOCK (ON LEFT REAR WHEELHOUSE) REAR WINDOW SUNSHADE MODULE REAR WINDOW SUNSHADE MOTOR (LEFT SIDE OF REAR WINDOW SHELF) RED WIRE SUNSHADE SWITCH VIO/BLK WIRE VIO/GRY WIRE W/ CLIMATE CONTROL WHT/ BLK WIRE YEL WIRE

1 25 26 12 DRAIN WIRE AUDIO SIG AUDIO SIG COMM SIG 34 37 35 36 PPL 5 4 VIDEO MODULE SIG VIDEO BRIGHT SIG 7 6 5 4 3 2 1 DRAIN WIRE AUX AUDIO LT SIG AUX AUDIO LT SIG AUDIO/VIDEO INPUT ADAPTER AUX VIDEO HI SIG BAT POS VOLT BATT POS VOLT BLK WIRE BLUNT CUT) BRIGHT SIG BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/GRY WIRE DK BLU/YEL WIRE DK GRN/WHT WIRE DRIVER SEATBACK VIDEO DISPLAY DVD VIDEO SIG (+) FUSE GRN/WHT WIRE GROUND GROUND PROVISION GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INFRARED RED AUDIO SIG WIRE LH DVD AUDIO SIG (+) LT BLU WIRE LT GRN WIRE LT GRN/DK BLU WIRE MODE 2 SIG NCA WIRE ORG/BLK WIRE ORG/BLU WIRE PASSENGER SEATBACK VIDEO DISPLAY PNK/BLK WIRE PPL DVD AUDIO COMMON PPL/RED WIRE RADIO RADIO CIRCUIT REAR BODY FUSE BLOCK (ON LEFT REAR RED/BRN WIRE RED/WHT WIRE REMOTE ENABLE REMOTE INFRARED SIG (-) REMOTE SIG RH AUDIO SIG RH DVD AUDIO SIG(+) RH INFRARED AUDIO SIG RT INFRARED AUDIO SIG VIDEO BRIGHT SIG VIDEO DRAIN WIRE VIDEO MODE 2 SIG VIDEO MODULE SIG VIDEO SIG 2 - VIO WIRE VIO/BLK WIRE VIO/DK BLU WIRE WHEELHOUSE) WHT WIRE WHT/BLK WIRE WHT/DK BLU WIRE WHT/GRY WIRE WHT/LT GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE