I also have a Ram that had to be disconnected from camper when parked for fear of draining the Ram's batteries as these trucks are live all the time, not off when ignitionis off. To keep it simple I mounted a Blue Sea m-series battery switch(PN 6006) in my camper that I turn off/on manually when parked for any length of time. I installed this switch between the 12V side coming into the converter and the 12v side leaving the converter. Works great, just don't forget to switch off when parked. I like KISS method. Have had it on for the last 5 years with no problems.