1990 ford wiring harness | eBay Find great deals on eBay for 1990 ford wiring harness. Shop with confidence. Skip to main content. eBay Logo: NOS OEM Ford 1990 1991 1992 F150 Truck Under Dash Wiring Harness F250 Pickup See more like this. NOS OEM Ford 1990 1991 F250 Super Duty Truck Pickup Rear Wiring Harness See more like this. Ford Truck Wiring Harness | eBay With an easily fitted Ford truck wiring harness you can replace any decayed or corroded wires with new, robust cables and have your famously stalwart truck back on the road in no time. If you have an older model truck and struggle to find parts, a universal wiring harness may be exactly what you need, engineered to fit a wide range of vehicles.