Four Pin Trailer Wiring Install (Wiring Diagram & Info)
2021-9-2u2002·u2002This is connected to each pin of the connector and should make it easier to find the faulty wire. If the problem persists, you may need to rewire your trailer. When buying wires for trailers, make sure they are the right thickness to increase durability. A thickness of 16 is ideal. The 4-pin trailer uses yellow, brown, green, and white wires.
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