Went to hook up my trailer today and both the trailer plugs do not work. I checked the fuses and all is well. They worked fine the other day but now they don't work at all. I confirmed this by hooking up to another trailer and nothing. Also got another truck and went to trailers and it worked.

My truck has 19000 miles so it's practically new. I have never seen this. I called dealer but they can't see it til next week and I need the trailer brakes and lights. Where could I look or what could the problem be?

Thanks in advance!

 

Did you check grounds

 

No. Where would they be at?

 

Is it a tow package or after market harness

 

And your saying it's jus the trucks 7 pin not working? You've hooked the trailers up to another truck and they worked fine

 

Both not working at all. It's the factory tow package from ford. The 7 pin and the flat 4 pin. Nothing at all.

 

Yes hooked trailers up to another truck and work fine.

 

Should be a white ground wire some where on the frame. I would look for that first.

 

Ok tomorrow I'll search around for that. If anyone else has some thoughts it would be appreciated. Thank you Iaff113 for your response. I'll check in with you tomorrow to let u know if it worked or not

 

Also check the plug where the trailer wiring harness connects to the truck harness towards the rear of the bed. Should be a plug connection.

 

Also since the pig tail for the 7 pin should be a plug and play make sure that didn't become disconnected


Late post sorry didn't read before I posted again.

 

Just from talking here it seems like it may be a ground. I read on the internet to take some jumper cables and hook them to the truck bed and to the trailer. That will make a ground. If lights come on trailer then it's def a ground. I did glance at connector and it looked ok earlier. I'm going to try this trick with cables and if it works then I'm going lookin for that ground cable. Just hard to believe this happened to basically a new truck

 

You did check the fuses under the hood, not the dashboard?
Joe

 

It has them under the hood? I checked all the fuses near the passenger floorboard. That's a pain in the butt location for a fuse block. Where are these fuses under the hood of a 6.7 Powerstroke superduty?

 

Yeah should have its own fuse box