Car Wiring Diagrams for Horn circuit for GMC RV Cutaway G3500 (2012-2013)

BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) GRN WIRE HORN ASSEMBLY (AT LEFT FRONT OF ENGINE COMPT) HORN FUSE 16 HORN RELAY CTRL HORN SWITCH (IN STEERING WHEEL) HORN/ WASH PCB RELAY HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (AT TOP OF STEERING COLUMN) ORG/ WIRE TAN WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT)