I always have mine plugged in. Fridge is always on and cold. When I go camping I unplug shore cord and fridge auto fires to propane. Confirm sound as I am doing walkaround
I arrive at campground (after fueling up at least once or twice
) and plug in and fridge auto switches to AC.
hard to believe though that after some driving you lost all the cold unless you were constantly in the fridge and drove for 8 hours or more