1997 Ford Mustang Car Stereo Radio Wiring Diagram Whether your an expert Ford Mustang mobile electronics installer, Ford Mustang fanatic, or a novice Ford Mustang enthusiast with a 1997 Ford Mustang, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 1997 Ford Mustang vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics. 1997 Ford Mustang OE Wiring Harnesses & Stereo Adapters Ford Mustang 1997, 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.