1991 ford f250 wire harness | eBay Find great deals on eBay for 1991 ford f250 wire harness. Shop with confidence. Skip to main content. eBay Logo: Find the right parts for your 1991 Ford F-250. Enter Trim. NEW CAR STEREO CD PLAYER WIRING HARNESS WIRE ADAPTER PLUG FOR AFTERMARKET RADIO. Brand New · American International. $5. 1991 Ford F-250 OE Wiring Harnesses & Stereo Adapters Ford F-250 1991, Aftermarket Radio Wiring Harness by Metra®, with OEM Plug. For aftermarket stereo. Metra preassembled wiring harnesses can make your car stereo installation seamless, or at least a lot simpler.