Trailer Tow Wiring Kit | The Official Site for Ford accessories›Exterior›Trailer TowingThe 4-pin wiring harness assembly splices/connects to the factory electrical system. Trailer Tow Wiring Kit. Part No: FT1Z-15A416-A . SRP: $75. Get local pricing. The 4-pin wiring harness assembly splices/connects to the factory electrical system. The Ford Accessories Store allows you to purchase from your local dealer. ford wiring harness kits | eBay www›Search›ford wiring harness kitsFind great deals on eBay for ford wiring harness kits. Shop with confidence. Skip to main content. eBay Logo: 3 product ratings - Trailer Wiring Harness Kit For 08-12 Ford Escape 08-11 Mazda Tribute Mariner NEW. $18. FAST 'N FREE. Buy It Now. Guaranteed by Wed, Mar. 13. Free Shipping.