Troubleshooting No Turn Signal on 7-Way of 2003 Ford F-350

Question:

I have one blinker on my trailer working but not the other. I checked the 7way plug and I don’t have power to that side. I looked on all the diagrams I could find online and I haven’t found an independent fuse for each side. In the ‘05-‘07 it has a larger fuse box under the hood and independent left/right blinker fuse. Any help would be greatly appreciated. The picture with the smaller fuse box is the one in my truck, the larger one is on an ‘05-07

asked by: Brandon

Expert Reply:

It's gotta be the wiring to that pin on the 7-way. You might check to see if you can find any corrosion or cut/exposed wire on the backside of the 7-way and fix as needed.

It could be an internal issue with the 7-way which you could replace with the part # C55774 and you'd be set.

expert reply by: Jameson C