You'd think a switch wired to the fridge fan would be a standard installation from Airstream. Even my Casita had that switch. It didn't seem to help on that 4cu/ft fridge so I never turned it on.
2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
2010 Tundra 5.7L, Double Cab, 2wd, White