I just rewired mine on the recommendation of my RV service center. My Dometic control system uses a data cable and multiple circuit boards to daisy chain the heater and the two AC units together with a single controller to control all 3 units. My heater recently had a failure and even thought the service location isolated the fault to a circuit board on the heater itself, they highly recommended I install a 2 wire controller to control the heater separately from the AC units. I did this when I installed the heater last week and the new controller has worked excellent.
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Alan
2012 Ram 3500 DRW Crew Cab, 6.7 HO Cummins
2014 Columbus M-340RK
'69 Chevy C-10, 396BB
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