Trailer tow circuit for BMW X3 F25 (2010-2014)

12 40 IND LP BRK LT BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS CIRCUIT FOOTWELL MODULE FULLY AUTOMATIC TRAILER TOWING HITCH FUSE 145 FUSE 19 (RIGHT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRY/BLK WIRE GRY/RED WIRE GRY/WHT WIRE HOT W/ HOT W/ BISTABLE RELAY ENERGIZED JUNCTION BOX NOISE SUPPRESSOR FILTER ORG/GRN WIRE PREPARATION FOR TRAILER SOCKET RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE RED/YEL WIRE RELAY ENERGIZED RH TURN SIG BRK LT TRAILER MODULE (REAR COMPT FLOOR BOARD) TRAILER SOCKET W/ TRAILER MODULE W/O TRAILER MODULE YEL/BLU WIRE YEL/RED WIRE