I have a pin with a loop in the hitch coupler latch. I run the umbilical cord and break away brake cable through the loop. My umbilical cord has only been disconnected when I left a campground and neglected to plug it in. I drove around a week and didn't even notice. I wouldn't have noticed then, but the people caravaning with us behind us called my wife on her cell to tell us we had no brake lights or turn signals.
2013 Classic 30 Limited
2007 Silver Toyota Tundra Crew Max Limited 5.7 iForce
2006 Vivid Black Harley-Davidson Road King Classic
1999 Black Nissan Pathfinder LE
WBCCI #1811, Region 6, Unit 56