1993 Ford F250 Truck Car Radio Wiring Diagram Whether your an expert Ford F250 mobile electronics installer, Ford F250 fanatic, or a novice Ford F250 enthusiast with a 1993 Ford F250, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 1993 Ford F250 vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics. 1993 Ford F-250 OE Wiring Harnesses & Stereo Adapters wwwd››Ford›F-250Ford F-250 1993, 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.