I need some collective help with my trailer lights on a 2001 4x4 with the factory Ford 7 pin trailer plug.

My trailer with a 4-pin connection works great on all trucks but the X, so I have pinpointed to failure to my tow vehical. I checked the voltages at the 7-pin plug by the reciever and the parking lights work, left turn signals work (as do the left brakes since they use the same pin), and the ground connection is good. The bad news is I have no voltage at the pin that operates the right brake light and right turn signal on the trailer.

On a side note, all the lights on the truck work perfectly, I am only having trouble with the trailer lights.

Does anyone know where I could find a wireing diagram for the 2001 Ex or if they have experience this problem and allready know the fix? I did some searching today on here and did find similar problems with the parking lights, but not the right brake light/turn signal.

I'm hoping there is just a fuse somewhere that may have blown, but I'm usually not that lucky.

 

did you have any luck, i have any wiring diagrams you might need...

 

Yes, I posted in another related thread and dchamberlain let me know that the trailer lights are on a separate circuit from the truck's lights. My problem was a blow fuse (location 22) under the hood inside the power distribution box.

Thanks for the offer of the wiring diagrams. I'll keep you in mind if something comes up again in the future.

If anyone else is reading this thread and wants to look at some other suggestions that were put out. Here is the other thread:

https://www.ford-trucks.com/forums/6...ht-issues.html