[zzrv]

Thanks Bob. Sorry for not explaining the situation more clearly. I have a habit of violating the K.I.S.S. rule.

The fridge was emptied and turned off. My toad was disconnected. I did discover the main compartment light switch was left on and there was one compartment light on. That is probably the cause of the coach batteries going dead.

I did jump the chassis battery with a 'hot shot' to get it going and ran the gen to recharge the house batteries. It is currently on the parking pad with it plugged in to 110.

My question is this: Should a coach light drain the chassis battery?

There is a battery isolator in the electric compartment which, I assume, should prevent this from happening.

P.S. This is a 2003 Ultra Supreme 33' class A on a F53 chassis.