Troubleshooting No Power at Factory Brake Controller Port on 2008 Ford F-150

Updated 03/27/2019 | Published 03/25/2019

Question:

I changed break controller out now I have no power to my factory plug on my trailer breaks under my dash where hook up wiring harness to plug in break controller so have no power to break controller now?

asked by: Jeff

Expert Reply:

If you aren't getting any power to the factory brake controller port beneath the dash of your Ford F-150 then most likely you have a blown fuse under the hood.

I took a look at the online version of the owner's manual for your 2008 Ford F-150 and it lists the trailer brake controller fuse in the F105 position inside the power distribution box. This is a 30 amp cartridge fuse. Replacing this particular fuse should get power back to the brake controller port and resolve your issue.

expert reply by: Chris R