Horn circuit for Jaguar XJR III (2003-2009)

BLK WIRE CASSETTE CRUISE CONTROL SYSTEM ENGINE CONTROL MODULE (RIGHT REAR SIDE OF ENG COMPT) FRONT ELECTRONIC MODULE (BEHIND LEFT FRONT KICK PANEL) FRONT POWER DISTRIBUTION FUSE BOX (RIGHT FRONT OF ENGINE COMPT) FUSE GRN WIRE GRN/WHT WIRE HORN RELAY HORN SWITCH HORNS HOT AT ALL TIMES NCA WIRE STEERING WHEEL) WHT WIRE YEL WIRE