Relay Locations for Trailer Running Lights on a 2009 Ford F-250

Updated 01/02/2019 | Published 01/01/2019

Question:

I have a 2009 f250.... when towing my trailer at night i dont have lights..... turn signal and brake lights work along with trailer brakes..... it must be a fuse but not sure wich one

asked by: Rusty R

Expert Reply:

If you are getting no signal when testing the running light pin on your 2009 Ford F-250, with a tester like part # PTW2991, then it very well could be a fuse or relay. When I looked up the online owner's manual for your F-250 it looks like you want to check the relays in the #42 and #55 positions in your Power Distribution Box.

Let me know if this doesn't fix your issue and I can help you troubleshoot further. I have linked some helpful articles on wiring to this answer page for you to check out as well.

expert reply by: Jon G