Trailer Wiring Diagram 4 Way Troubleshooting. This color trailer wiring diagram will help you when you need to connect your trailer to your truck's wiring harness or repair a wire that isn't working. It gets complicated when you have trailers with more cables, and in this case, you need an adapter to make the connections.
This color trailer wiring diagram will help you when you need to connect your trailer to your truck's wiring harness or repair a wire that isn't working.
Find your trailer hitch bike rack You can do your own auto repairs by following out easy step-by-step do-it-yourself tutorials which show you how to diagnose, troubleshoot, repair, fix.
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Here is the brand new generic wiring harness. The five way flat is sometimes used to give an extra wire for auxiliary power, backup lights, or whatever - so you never know what a prior owner of a truck or trailer has done with one of those either without testing the extra wire to discover. So here I have an older trailer which needed some work I've provide three different wiring diagrams at the end of the video for a better understanding.