Troubleshooting No Power to Trailer Battery Charging Circuit on 2010 Ford F-150

Published 09/13/2018

Question:

Hi I had a question I have a 2010 f150 ftom my tow hitch not getting any power to charge my battery in my trailer wondering if you could help out what to look ft. Or and check

asked by: George

Helpful Expert Reply:

First thing to check is to see if there's voltage on the 1:00 pin of the 7-way on your truck. This is the 12 volt accessory circuit which would be what would charge the battery. Most of the time it's just a bit of corrosion on this pin that prevents it from making contact. But if not that it's most likely a blown fuse or relay under the hood.

You can also check to make sure the wiring is complete behind the 7-way too. If not the orange wire in the picture I attached would need to be ran to the 7-way.

expert reply by: Jameson C