Diagram For Standard Trailer Wiring Harness. The hitch and wiring harness are Toyota. Planning for splices in your wiring harness represents the most complex and critical part of the design process.
I'm assuming you're just going to splice into the tail light. if you have a diagram of the trailer wiring harness please post it on my thread it will be appreciated. Anyone have a wiring diagram for the harness, and any thoughts why I can't get backup lights to work? This means you'll need a connector with at least four contacts.
Not surprisingly, the standard flat-style connector for trailers uses four pins, with one unshrouded.
The above is a typical Microsoft Visio diagram for motorsports wiring and harness design.
I wired mine with a standard trailer wiring kit, and bought a hoppy isolator at the local auto parts store in case I needed to exchange it. Anyone have a wiring diagram for the harness, and any thoughts why I can't get backup lights to work? Our trailer wiring diagram is a colour coded guide designed to help you wire your trailer plug or socket.