Ford Bronco Wiring Harness – Wiring Harness for Bronco Want an affordable yet high-quality Ford Bronco Wiring Harness? Shop now and enjoy our lowest price guarantee and access to the best brands in the industry! 1986 Ford Bronco OE Wiring Harnesses & Stereo Adapters Ford Bronco / Bronco II 1986, 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.