I took the fifth wheel for a ride after I ran new wiring across the axles. It no longer pulls to one side when I stop.
The wire that had pulled out of the connector didn't have any wire inside the insulator for about 3/4" back when I was stripping the wires to make the new connection. It was one of the wires that goes to the magnet.
After towing 5 miles and stopping 4-5 times I checked the hubs with my infrared thermometer and one hub on each side was hotter than the other two so I will adjust the brake shoes to make sure they don't drag.
Then I think it will be good to go.
The wiring running up front is probably okay for now.
Thanks for all the advice!