[Deper10]

As I understand Dario, with the solenoid off there is voltage on the chassis side and not on the coach side. If there is voltage at the terminals on the coach batteries themselves, then indeed there is an open in the circuit between the batteries and solenoid, and the house. On my 93 coach there is a cylindrical doodad near the positve battery terminal that could be a fuse, test across it.

If the batteries have voltage past the fuse but not to the solenoid, then the likely culprit is the battery shutoff switch.

If there is no voltage between the coach battery positive and negative terminals then you have dead batteries. In that case the question to be answered is a battery shorted and killing the others or is the charger not working. If the coach is plugged in with the cutoff switch closed the charger should be providing something to the batteries that you could detect if the charger is turned on. The sole exception I can think of is some chargers won't kick on when batteries are completely dead to protect themselves. In that case you may need to temporarily use a portable charger to get things started.

Thanks Jon, I will be working on it again today

Dario