Car Wiring Diagrams for Horn circuit for GMC Sierra IV (2018-2022)

BATTERY FUSE BLOCK BLK WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE GRN WIRE GRN/WHT WIRE GRY WIRE HORN HORN RELAY HORN RLY CTRL HORN SW SIG HOT AT ALL TIMES RED WIRE STEERING WHEEL AIR BAG COIL UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE