Buick LaCrosse II facelift (2013-2016) 15 10 12 b+ serial data 1+ serial data 1- Wiring diagrams

1 2 8 VOICE SIGNAL LOW REF DRAIN WIRE 15 10 12 B+ SERIAL DATA 1+ SERIAL DATA 1- 24 25 SERIAL DATA (-) 1 SERIAL DATA (+) 1 6 12 5 VOICE SIGNAL LOW REF DRAIN WIRE BACKUP LAMP SPLY VOLT BLK WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COAX BU GPS COAX GY GPS/CELL COAX VT GPS/CELL COMPUTER DATA LINES SYSTEM GRN/WHT WIRE GROUND GRY/YEL WIRE NAVIGATION ANTENNA SIGNAL SPLITTER NCA WIRE PU COAX GPS RED/BLU WIRE RED/VIO WIRE TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE W/ NAVIGATION W/ ONSTAR W/O NAVIGATION WHT WIRE YEL WIRE

1 2 8 VOICE SIGNAL LOW REF DRAIN WIRE 15 10 12 B+ SERIAL DATA 1+ SERIAL DATA 1- 24 25 SERIAL DATA (-) 1 SERIAL DATA (+) 1 6 12 5 VOICE SIGNAL LOW REF DRAIN WIRE BACKUP LAMP SPLY VOLT BLK WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COAX BU GPS COAX GY GPS/CELL COAX VT GPS/CELL COMPUTER DATA LINES SYSTEM GRN/WHT WIRE GROUND GRY/YEL WIRE NAVIGATION ANTENNA SIGNAL SPLITTER NCA WIRE PU COAX GPS RED/BLU WIRE RED/VIO WIRE TELEMATICS COMMUNICATIONS INTERFACE CONTROL MODULE W/ NAVIGATION W/ ONSTAR W/O NAVIGATION WHT WIRE YEL WIRE

1 2 8 VOICE SIGNAL LOW REF DRAIN WIRE 15 10 12 B+ SERIAL DATA 1+ SERIAL DATA 1- 24 25 SERIAL DATA (-) 1 SERIAL DATA (+) 1 6 12 5 VOICE SIGNAL LOW REF DRAIN WIRE BACKUP LAMP SPLY VOLT BLK WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COAX BU GPS COAX GY GPS/CELL COAX VT GPS/CELL COMPUTER DATA LINES SYSTEM GRN/WHT WIRE GROUND GRY/YEL WIRE NAVIGATION ANTENNA SIGNAL SPLITTER NCA WIRE PU COAX GPS RED/BLU WIRE RED/VIO WIRE TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE W/ NAVIGATION W/ ONSTAR W/O NAVIGATION WHT WIRE YEL WIRE

1 2 8 VOICE SIGNAL LOW REF DRAIN WIRE 15 10 12 B+ SERIAL DATA 1+ SERIAL DATA 1- 24 25 SERIAL DATA (-) 1 SERIAL DATA (+) 1 6 12 5 VOICE SIGNAL LOW REF DRAIN WIRE BACKUP LAMP SPLY VOLT BLK WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COAX BU GPS COAX GY GPS/CELL COAX VT GPS/CELL COMPUTER DATA LINES SYSTEM GRN/WHT WIRE GROUND GRY/YEL WIRE NAVIGATION ANTENNA SIGNAL SPLITTER NCA WIRE PU COAX GPS RED/BLU WIRE RED/VIO WIRE TELEMATICS COMMUNICATIONS INTERFACE CONTROL MODULE W/ NAVIGATION W/ ONSTAR W/O NAVIGATION WHT WIRE YEL WIRE