Brett, thank for your very clear reply, but I have configuration #1, a solenoid-based isolator. Here is the solenoid layout (two large lugs and two small terminals):
- One large lug goes to the chassis batteries and the other to the coach batteries.
- A small rectangular isolator with three small wires:
... The center blue wire connects to a blue wire entering (from ???) into the battery compartment
... The isolator red and black wires connect separately to the small terminals on the solenoid
... There is another wire pair entering the battery compartment (from ???0); the red one goes to
the "small-red" terminal on the solenoid, and the white one goes to the "small-black" terminal)
on the solenoid.
Thanks for your help!
Bob