Buick LaCrosse I (2004-2009) horns system headlights system exterior lights system Wiring diagrams

4 3 2 1 VOLT (+) AJAR DOOR LOCK AJAR INDICATOR SWITCH BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CLASS 2 COAX ANTENNA SIG COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DOOR AJAR INDICATOR DOOR AJAR TRUNK AJAR DOOR LOCK ACTUATOR DOOR LOCK CYLINDER SWITCH DOOR LOCK OPEN INDICATOR SWITCH DR/LCK TRUNK FUSE DRIVER DOOR LOCK (IN REAR SIDE OF DRIVER'S DOOR) DRIVER DOOR LOCK SWITCH FRONT PASSENGER DOOR LOCK (IN REAR SIDE OF FRONT PASSENGER'S DOOR) FRONT PASSENGER DOOR LOCK SWITCH GRY WIRE GRY/BLK WIRE HORNS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR LOCK (IN REAR SIDE OF LEFT REAR PASSENGER'S DOOR) LOCK LOCK UNLOCK LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER NCA WIRE ORG/ WIRE ORG/BLK WIRE PASSENGER SEAT, APPROXIMATELY 26 CM FROM SECOND PNK RFA SER DATA GROUND WIRE POWER DISTRIBUTION SYSTEM PPL REAR COMPARTMENT LID LATCH (IN REAR COMPT LID) RED WIRE RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) RFA/MOD FUSE RIGHT REAR DOOR LOCK (IN REAR SIDE OF RIGHT REAR PASSENGER'S DOOR) SECURITY INDICATOR TAN WIRE THEFT LED TOWARDS INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE) TRUNK AJAR INDICATOR UNLOCK W/ DIGITAL AUDIO SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

4 3 2 1 VOLT (+) AJAR DOOR LOCK AJAR INDICATOR SWITCH BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CLASS 2 COAX ANTENNA SIG COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DOOR AJAR INDICATOR DOOR AJAR TRUNK AJAR DOOR LOCK ACTUATOR DOOR LOCK CYLINDER SWITCH DOOR LOCK OPEN INDICATOR SWITCH DR/LCK TRUNK FUSE DRIVER DOOR LOCK (IN REAR SIDE OF DRIVER'S DOOR) DRIVER DOOR LOCK SWITCH FRONT PASSENGER DOOR LOCK (IN REAR SIDE OF FRONT PASSENGER'S DOOR) FRONT PASSENGER DOOR LOCK SWITCH GRY WIRE GRY/BLK WIRE HORNS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR LOCK (IN REAR SIDE OF LEFT REAR PASSENGER'S DOOR) LOCK LOCK UNLOCK LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER NCA WIRE ORG/ WIRE ORG/BLK WIRE PASSENGER SEAT, APPROXIMATELY 26 CM FROM SECOND PNK RFA SER DATA GROUND WIRE POWER DISTRIBUTION SYSTEM PPL REAR COMPARTMENT LID LATCH (IN REAR COMPT LID) RED WIRE RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) RFA/MOD FUSE RIGHT REAR DOOR LOCK (IN REAR SIDE OF RIGHT REAR PASSENGER'S DOOR) SECURITY INDICATOR TAN WIRE THEFT LED TOWARDS INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE) TRUNK AJAR INDICATOR UNLOCK W/ DIGITAL AUDIO SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE