[rellick]

Hi Bob, I'm pretty sure that's your merge switch, I don't have any diagrams for it, on your solonoid one side will be your house batt, the other engine, it separates them or joins them together for charging or isolating. Mine were all joined together when I got the coach, separated them to how I think they should be and seems to be working. Not sure how they have the charging set up but when the engine is running it charges both sides, there has to be something to prevent backfeeding, possibly 77newell or prairieshcooner would know for sure, I just haven't spent any time figuring out that particular circuit