Troubleshooting a 7-Way on a 2008 Ford F-250 that Has No Trailer Light Signals

Updated 04/01/2015 | Published 03/31/2015

Question:

I have no signal or brake lights at the 7 way plug but park lights work 12 volt charge has 12 volts trailer brakes have power. The truck is a 2008 f250 gas 5.4 with factory trailer wiring. What do I check? Thanks

asked by: Paul

Expert Reply:

First place I would check is all of the trailer wiring fuses and relays in the fuse box of your 2008 Ford F-250 as it sounds like you may have blown some fuses/relays. Beyond that you can check for corrosion on both sides of the 7-way connector and clean as necessary.

I attached a help article on troubleshooting trailer connectors for you to check out as well.

expert reply by: Jameson C