Horn circuit for BMW 1 series E81/E82/E87/E88 facelift (2007-2011)

BLK WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE CAR ACCESS SYSTEM (UNDER LEFT SIDE OF DASH) FUSE GRN WIRE HORN RELAY HORN SWITCH HOT AT ALL TIMES JUNCTION BOX JUNCTION BOX ELECTRONICS LEFT HORN (LEFT SIDE OF FRONT BUMPER) REAR FUSE HOLDER (RIGHT SIDE OF REAR COMPT) RED WIRE RIGHT HORN (RIGHT SIDE OF FRONT BUMPER) STEERING COLUMN SWITCH CLUSTER TERMINAL 15 RELAY VIO/BLU WIRE