Cadillac SRX I (2003-2009) 4.6l vin a, back-up lamps circuit

1 8 9 GND DATA BUS+ DATA BUS- AUTOMATIC TRANSMISSION BACKUP SUP VOLT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (ON LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY GRND HOT AT ALL TIMES INSIDE REAR VIEW MIRROR (ISRVM) INTERNAL MODE SWITCH JOINT CONNECTOR LEFT REAR FUSE BLOCK (NEAR LEFT SIDE OF REAR SEAT, UNDER CARPET) LT GRN WIRE MAJOR LEFT BACKUP LAMP MAJOR RIGHT BACKUP LAMP RED/WHT WIRE RNG SW SIG A RNG SW SIG B SER DATA- SER DATA+ RVC SNSR FUSE SPARE RELAY SUP VOLT BACKUP TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (AT RIGHT FRONT OF ENGINE COMPARTMENT) WHT WIRE