My 01 7 pin connector don't work? The 4 pin works fine but when I plug an adaptor to the 7 pin lights do nothing. I check everywhere with a test light all I have is running lights. No blinkers or stop. Is there some relays that I could be missing to make it work. I just bought they truck a few months ago. Any help on the matter

 

Try manually grounding the circuit. That will at least tell you whether or not you have a grounding issue. I found that hooking the negative of a jumper cable to the tailpipe (while cold obviously) and to bare metal on the trailer works as a ground. Had the same issue on my truck except I couldn't get it to work even on the 4 pin, eventually cleaned all the grounds on the trailer and on the connector, works good now.

 

Yes...check your fuse panel.

 

Do you have a picture of the plug? Are the 4 and the 7 pin completely separate? Or are they on the same mount I guess you could call it. Because I don't think ford put the 2&1 connector all in the same mount.

 

Like this. This is not factory

 

That is the plug I put the other one had broke. But the 4 pin was all rubber and the wiring goes into the harness. Not to the 7pin harness plug

 

So your plug is like this one? If you can get pictures it would help

 

 

In 2001 ford switch to a 4/7 pin setup. Like pictured above.

 

While looking at it the other day I think there was no relays for trailer battery charger or something like that. Should there be relays there. I think trailer back up was missing too? Are these needed to make blinkers work at 7-pin