Buick LaCrosse II (2009-2013) common sig Wiring diagrams

AUDIO JACK AUDIO SIG + AUX AUDIO JACK AUX AUDIO SIG AUX DETECTION SIG AUXILIARY AUDIO INPUT (W/ AUDIO INTERFACE) BATT POS VOLT BLK WIRE BLK/YEL WIRE BRN WIRE CENTER RESET SIG CENTER STACK SIG CGI - COMMON SIG COMPUTER DATA LINES SYSTEM DETECTION SIG DK BLU WIRE DRAIN WIRE GMLAN SERIAL DATA GRN WIRE GRN/BLU WIRE GROUND GRY WIRE GRY/DK GRN WIRE JACK LEFT (+) JACK RIGHT (+) LEFT AUX SIG (2) LEFT SIG (2) LOCAL NETWORK 10 LT GRN WIRE LT GRN/YEL WIRE MULTIMEDIA PLAYER INTERFACE MODULE (W/ EQUIPPED) NCA WIRE PPL PPL W/ NAVIGATION RED/DK BLU WIRE RIGHT AUX SIG (2) RIGHT SIG 2 VIO WIRE W/ AUDIO INTERFACE W/O AUDIO INTERFACE W/O NAVIGATION PPL YEL WIRE

AMPLIFIER CTRL AUDIO SIG (3) AUX DET SIG BATT POS VOLT BLK WIRE BLK/YEL WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/DK BLU WIRE BRN/VIO WIRE BRN/WHT WIRE CENTER AUDIO SIG CENTER SIG CGI - COMMON SIG COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CTRL SW SIG DK BLU WIRE DK BLU/BLK WIRE DK BLU/BRN WIRE DK BLU/GRY WIRE DK BLU/VIO WIRE DRAIN WIRE DRIVER SEATBACK VIDEO DISPLAY (W/ REAR SEAT ENTERTAINMENT) FRT LO LVL SIG (-) GM LAN SER DATA GMLAN SERIAL DATA GRN WIRE GRY WIRE GRY/DK GRN WIRE HEADLIGHTS SYSTEM LEFT AUDIO SIG LEFT AUX SIG (2) LF LO LVL SIG LOW LVL (-) LOW LVL SIG (-) LR LO LVL SIG LT GRN WIRE LT GRN/BLK WIRE LT GRN/DK BLU WIRE LT GRN/YEL WIRE NCA WIRE ORG/ WIRE PASSENGER SEATBACK VIDEO DISPLAY (W/ REAR SEAT ENTERTAINMENT) PPL RADIO RED WIRE REMOTE ENABLE RF LO LVL SIG RIGHT AUDIO SIG RIGHT SIG 2 RIGHT STEERING WHEEL CONTROLS SWITCH RR LO LVL SIG SEEK DOWN SEEK UP SOURCE STACK RESET SIG STEERING WHEEL AIR BAG COIL SW REF VOLT VIDEO SYSTEM CIRCUIT VIO WIRE VIO/DK BLU WIRE VOICE LOW REF VOICE MUTE VOICE SIG VOL (-) W/ REAR SEAT ENTERTAINMENT WHT WIRE WHT/BLK WIRE WHT/VIO WIRE YEL WIRE

AUDIO JACK AUDIO SIG + AUX AUDIO JACK AUX AUDIO SIG AUX DETECTION SIG AUXILIARY AUDIO INPUT (W/ AUDIO INTERFACE) BATT POS VOLT BLK WIRE BLK/YEL WIRE BRN WIRE CENTER RESET SIG CENTER STACK SIG CGI - COMMON SIG COMPUTER DATA LINES SYSTEM DETECTION SIG DK BLU WIRE DRAIN WIRE GMLAN SERIAL DATA GRN WIRE GRN/BLU WIRE GROUND GRY WIRE GRY/DK GRN WIRE JACK LEFT (+) JACK RIGHT (+) LEFT AUX SIG (2) LEFT SIG (2) LOCAL NETWORK 10 LT GRN WIRE LT GRN/YEL WIRE MULTIMEDIA PLAYER INTERFACE MODULE (W/ EQUIPPED) NCA WIRE PPL PPL W/ NAVIGATION RED WIRE RED/DK BLU WIRE RIGHT AUX SIG (2) RIGHT SIG 2 VIO WIRE W/ AUDIO INTERFACE W/O AUDIO INTERFACE W/O NAVIGATION PPL YEL WIRE

4 8 SW REF VOLT CTRL SW SIG AUDIO SIG (3) AUX DET SIG BATT POS VOLT BLK WIRE BLK/YEL WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN/DK BLU WIRE CENTER SIG CGI - COMMON SIG COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DK BLU WIRE DK BLU/BLK WIRE DK BLU/WHT WIRE DRAIN WIRE FRT LO LVL SIG (-) GM LAN SER DATA GRN WIRE GRY WIRE GRY/DK GRN WIRE HEADLIGHTS SYSTEM INSTRUMENT PANEL CENTER SPEAKER LEFT AUDIO SIG LEFT AUX SIG (2) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR DOOR SPEAKER LF LO LVL SIG LO SPD GMLAN SERIAL DATA LR LO LVL SIG LT GRN WIRE LT GRN/BLK WIRE LT GRN/YEL WIRE MUTE NCA WIRE ORG/ WIRE PPL RADIO RED WIRE REMOTE ENABLE RF LO LVL SIG RIGHT AUDIO SIG RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT REAR DOOR SPEAKER RIGHT SIG 2 RIGHT STEERING WHEEL CONTROLS SWITCH RR LO LVL SIG SEEK DOWN SEEK UP SOURCE STACK RESET SIG STEERING WHEEL AIR BAG COIL VIDEO SYSTEM CIRCUIT VIO WIRE VIO/DK BLU WIRE VOICE VOICE LOW REF VOICE SIG VOL (-) WHT WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE