Horn circuit for Ford Pickup F350 (1996-1997)

BLK/ORG WIRE DK BLU WIRE DK GRN/ORG WIRE ENGINE COMPT RELAY BOX (ENG COMPT, LEFT INNER FENDER PANEL) FUSE 3 HIGH PITCH HORN HORN RELAY HORN SWITCH HOT AT ALL TIMES LOW PITCH HORN (RIGHT FRONT OF ENGINE COMPT, BELOW HEADLAMP) LT GRN WIRE NCA WIRE REMOTE KEYLESS ENTRY MODULE (BEHIND LEFT SIDE OF DASH) SPEED CONTROL/ HORN SWITCH ASSEMBLY YEL WIRE YEL/LT BLU WIRE YEL/LT GRN WIRE