1977 ford wire harness | eBay Find great deals on eBay for 1977 ford wire harness. Shop with confidence. Skip to main content. eBay Logo: 1977 Ford Bronco Wiring Harness 510317 IN STOCK See more like this. Curt 55301 Custom Wiring Harness for Ford F-150/F-250/F-350 (Fits: 1977 Ford) 60 Day Returns. Ships same day if ordered before 2pm CT Ford F-250 Wiring Harness – Wiring Harness for F-250 Want an affordable yet high-quality Ford F-250 Wiring Harness? Shop now and enjoy our lowest price guarantee and access to the best brands in the industry!