I bought a 1999 Winnebago Adventure and at the time everything appeared to work but now when I disconnect shore power, the 12 volt system doesn't engage so the coach is completely dead. All batteries appear fully charged. The coach is equipped with a dead man switch that separates the engine battery from the 4 coach batteries.
Is there a manual switch that I am missing?
Electricity is my least knowledgeable discipline..... please help and keep it simple please.