Horn circuit for Jaguar XJ X351 (2009-2015)

BLK WIRE BLU/WHT WIRE CENTRAL JUNCTION HORN BOX RELAY (LEFT REAR CTRL SEAT BACKREST) CLOCK SPRING (IN STEERING COLUMN) ENGINE JUNCTION BOX (RIGHT REAR OF ENGINE COMPT) FUSE GRN/WHT WIRE HORN (BEHIND GRILLE) HORN RELAY HORN SWITCH HOT AT ALL TIMES MEGA FUSE SOUND, TRANSMISSIONS SYSTEMS STEERING WHEEL SPEED CONTROL SWITCH PACK