Troubleshooting 2017 Reflection 5th Wheel Trailer Causing Check Wiring Fault When Connected To Truck  

Question:

Expert Reply:

I would be happy to help!

Based on the description of the wiring issue it sounds like the black and white wires on your trailer are connected incorrectly causing an issue.

Typically the white wire is the ground wire, and the black wire is the positive wire to the battery of the trailer. It sounds like both wires were connected to the battery. Was the white wire connected to the negative terminal and the black wire connected to the positive terminal?

If so then the white wire was installed incorrectly, as it needs to be grounded to the trailer frame, and not directly to the negative terminal of your battery.

You can confirm that it is the ground wire by seeing where it gets installed in the 7-way connector. The ground wire on the trailer end 7-way connector is the 5 o'clock pin if you are looking at the front of the connector, or the 7 o'clock pin if you are looking at the rear of the connector.

As long as that is where the white wire is going, then grounding the wire to the frame should correct your issue.

I included a link to a helpful article on wiring for you to take a look at.

expert reply by: Samuel C

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