First off, my MH was from my parents and the only time they used the TV was when they had cable at their park. Now I'm trying to get it to work with the Wingard bat wing antenna has me stumped. Tried ...
When I started running down the coax on my 5er, I took a couple of inches of coax with a connector on one end. I shorted the shield to the center conductor on the coax stub. With it and a barrel connector I could insert it at any connection. Then a simple check with the Ohm meter on the other end would confirm if I had the right cable.