This is the wiring harness for the horn on 1997-2009 Chevrolet T6500, T7500, 2004-2009 Chevrolet T8500, 1990-2002 GMC C6500, and C7500 trucks. This item mounts on the front of the vehicle. This is for those trucks equipped with the dual horn setup. Replace your old, faulty, malfunctioning wire harness with this brand new factory original part from General Motors at a fraction of the dealer price.

New. Never Installed. OEM Part. Bulk Overstock

GM part # 12063900 (number on the item)

Item is number 5 in the GM diagram