Agree most likely a pinch between the hitch, sway bar, and or WHD bars. Hooked up on our recent trip and made a quick stop at wally world for supplies. Noticed that my TT nav lites were not working. A quick check showed that the pigtail was caught between the WDH bars and the TT frame, causing the plug to be pulled loose from the TV. Didn't cut the pigtail or any of the wires so just had to be more careful with how I fed the pigtail to the TV.