Tail lights not lit when towing.

[paz]

The receptacle on the front of the Jeep should have pins in the recess behind the cover. I had one of the pins on our toad push back into the receptacle one time, which means it did not make good contact. I had to disassemble the receptacle and push the pin back out. You should be able to see if a pin has pushed back or if one or more of the pins are worn.

My other thought is that it is more likely one of the female contacts on the toad end of the umbilical has spread resulting in poor contact.

[Letsgoagain]

Final post on the tail light not lighting problem.
My final solution was to wrap the umbilical cord end that plugs into the jeep with electrical tape and I sprayed electrical contact cleaner in the holes. Although I don't think this will be a permanent fix and I eventually have to rewire a new receptacle on the jeep this seems to have snugged up the umbilical enough to make good contact.
Also during this process I discovered that the umbilical cord has a screw on each end that tightens and holds the outer casing of the wire into the connectors. On both ends these had come loose and needed to be tightened. Probably wouldn't hurt to make that a periodic check as it could prevent some trouble somewhere down the road.
Thanks again for all your suggestions and help.
Letsgoagain