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Troubleshooting 2016 Ram Factory Brake Controller Not Recognizing Restored Trailer


Im restoring a 72 airstream, put two new axles on it, and rewired the trailer brakes per the 7 pin diagrams found on this website. For some reason my 2016 Ram 1500 factory brake controller doesnt recognize the trailer... confounding me. All the lights work just fine, but Im having trouble with where to start. I hooked a friends trailer up to my truck, and it worked fine, so I believe the truck side works as advertised. Where should I start troubleshooting on the trailer? Thank you!


Expert Reply:

Since the integrated brake controller on your 2016 Ram 1500 worked fine on a different trailer, the issue definitely appears to be somewhere on your restored 1972 Airstream.

I first recommend checking the 7-Way on the trailer to make sure there isn't any built-up dirt or corrosion behind the pins, cleaning out as needed. Then you will just need to check the newly installed wiring to make sure there aren't any pinched or exposed areas that might be causing a short. Also check to make sure all your ground connections are secured to clean, bare metal surfaces free of any debris or corrosion.

If the wiring all looks good, then you will want to turn your attention to the brake assemblies themselves on the trailer. Make sure the ground and power wires from each assembly are connected properly. You can also test the magnets to make sure they are working properly. I have attached an article that explains how to do this that you might find helpful.

If you still cannot locate and resolve the issue, please let me know and we can continue to troubleshoot.

expert reply by:
Chris R

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