Buick LaCrosse I (2004-2009) 3.6l vin 7, backup lamps circuit

37 38 GMLAN SER DATA 46 29 TR SW B TR SW A AUTOMATIC TRANSMISSION BACKUP LAMP SPLY VOLT BATTERY VOLT BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CHMSL/ BKUP FUSE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE GMLAN SER DATA HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) LEFT BACK-UP LAMP LT BLU WIRE LT GRN WIRE ORG/ WIRE RED WIRE RIGHT BACK-UP LAMP SPLICE PACK TRANSMISSION INTERNAL MODE SWITCH (IMS) WHT WIRE YEL WIRE