7 Pin Round Trailer Connector Wiring Diagram

7 Pin Round Trailer Connector Wiring Diagram. It reveals the parts of the circuit as simplified forms, as well as the power and also signal links between the tools. Trailer wiring can be difficult to get your head around.

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This item is a trailer plug which is made of high quality material for durable using. The three additional pins are: trailer brakes, back-up lights and trailer battery charging. What do I need to do to get the reverse lead to work on this wiring setup?

I drew this crude diagram to help explain.

When I check for running lights, L&R turn/brake signals, everything checks out.

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While going into a gas station with a bit of a grade I heard a screech. Wired as per diagram - no joy. The color of the wires are Brown, Black, Green, White, Red, Blue and Yellow (all are solid color no stripe.