Chevrolet Avalanche I (2001-2006) Horn circuit

BLK WIRE BODY CONTROL MODULE (BEHIND LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) DK GRN WIRE HORN FUSE HORN RELAY HORN SWITCH HOT AT ALL TIMES LEFT HORN (LEFT SIDE OF RADIATOR SUPPORT) RIGHT HORN (RIGHT SIDE OF RADIATOR SUPPORT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) YEL WIRE