Trailer Fuse and Relay Locations on a 2007 Ford E-250

Updated 05/08/2020 | Published 12/28/2017

Question:

HI I have a 2007 e250. Purchased wiring from u guys and there is only power to running lights. dont have owners manual. Can u tell me where r fuse location and numbers? thanks

asked by: George M

Expert Reply:

I found an owner's manual online for your 2007 Ford E-250 and it looks like the fuses for a trailer are in the following locations:

Passenger Compartment Fuse Panel -
15 - Trailer battery charge relay,Cluster, BSM
39 - Trailer tow electric brake, Center High-Mounted Stop Lamp (CHMSL), Brake lamps

Power Distribution Box (in the engine compartment) -
8 - Trailer battery charge relay
24 - Trailer tow running lamps and back-up lamp relays
26 - Trailer tow turn signals
C - Trailer back-up lamps relay
D - Trailer running lamps relay
E - Trailer battery charge relay

If all of these look good then let me know and I can help you troubleshoot further. I have also attached a link to a helpful article on troubleshooting wiring as well as our selection of replacement wiring for your E-250.

expert reply by: Jon G

David H.

5/6/2020

My fuses are good however when testing truck wires at the rear the only one with power is the running lights

Chris R.

5/8/2020

Did you test the wiring just behind the truck's connector, or did you test the pins on the connector itself? If you tested the pins, I would next test the wiring behind the connector - if you end up getting power there then it's just a bad connector that needs to be replaced. If you don't have power on the wires though, then there's a short somewhere in between that needs to be tracked down. If this is factory trailer wiring your best bet may be to bring the vehicle up to a local dealer to have them take a look.