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7-Way Trailer Wiring Diagram Recommendation to Use as Guide for Wiring Up 7-Way  

Question:

The colors on truck dont match wiring diagram. I have a Few 250 super duty. Trying to wire a seven way for trailor

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Expert Reply:

It's frustrating, but sometimes trailer wiring colors don't always match what the standard colors are supposed to be. In those situations you have to test the wires by function with a circuit tester like part # PTW2993 and then wire by function to a diagram of the connector like the picture I attached.

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Jameson C
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