Troubleshooting Trailer Brake Magnets that Arent Receiving Power From Brake Controller

Published 12/20/2017

Question:

Connect 7 way from trailer to the tow Vehicle, The Tekonsha P3 glows green indicating connection to trailer. All lights on trailer work. The magnets on the trailer brakes do not energize. The manual override lever works as it should. increasing power voltage. However there is no power going to the magnets. How do I trouble shoot this problem? Thanks in advance.

asked by: Grady M

Expert Reply:

There has to be an interruption on the brake output circuit somewhere between the 7-way of the trailer and the magnets. What I would recommend you do is take and keep testing the wiring of the circuit starting at the connector and make your way back to the magnets testing the circuit every few feet or wherever it seems reasonable. Where you find the circuit goes dead is where the problem is.

Also make sure the assemblies are grounding properly.

I also attached a help article on testing brake magnets for you to check out as well.

expert reply by: Jameson C