7 Pin Trailer Wiring Troubleshooting

7 Pin Trailer Wiring Troubleshooting. I have hooked up a trailer light and it works manually, but I have not been able to get it to come on automatically. For more advanced issues that you can't fix on your own.

1970 f250 electrical/light issues - Ford Truck Enthusiasts ...
1970 f250 electrical/light issues - Ford Truck Enthusiasts ... (David Weaver)
If so, does it have power when the ignition is off, or only when on? Anyone have a diagram of which pins supply which functions? There is not a pin on the truck that gets hot with brakes applied.

Wiring your four-pin trailer can be a challenge when you first do it, but it's a simple do-it-yourself task.

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Anyone have a diagram of which pins supply which functions? If you don't follow this your trailer (or tow vehicle) can't be used with any other implement. To troubleshoot your trailer wiring, connect a jumper wire to the connector pins and the continuity tester to the system's sockets.

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