Car wiring diagrams: Acura Trailer Wiring Harness, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. Find great deals on eBay for Trailer Wiring Harness in Towing Systems. Shop with confidence..We have the largest selection of Trailer Wiring Harness Parts and Accessories. Shop with ease using our customer reviews, live chat support day Guarantee!.Plug into existing taillight harness. No cutting or splicing. flat connector, gauge wire. Taillight converter included with kits when needed..