Back-up lamps circuit for Lexus LS III (2000-2003)

A/C CONTROL ASSEMBLY (BEHIND RIGHT SIDE OF DASH) MPX- BACK- UP LIGHT BACKUP LIGHT SWITCH PARK/NEUTRAL POSITION SWITCH BLK WIRE CENTER CLUSTER INTEGRATION PANEL MPX- ENGINE CONTROL MODULE (ON LEFT FRONT OF ENG COMPT) ENGINE ROOM J/B 1 (ON LEFT FRONT OF ENGINE COMPT) FR IG FUSE FUSIBLE LINK BLOCK GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES J/C 1, J/C 2 (NEAR ECM, IN PROTECTIVE CASE) J/C 23 (REARWARD OF LEFT REAR FENDERWELL) J/C 24, J/C 25 (LEFT REAR OF LUGGAGE COMPT) LEFT REAR COMBINATION LIGHT BACK-UP LIGHT LUG J/B FUSE LUGGAGE ROOM J/B (ON LEFT SIDE OF LUGGAGE COMPARTMENT) LUGGAGE ROOM J/B ECU BK/UP MPX RED WIRE RIGHT REAR COMBINATION LIGHT VIO WIRE W/O NAVIGATION W/ NAVIGATION WHT WIRE WHT/BLK WIRE YEL WIRE