Thanks to all for contributing here. I was thinking it is what all of you described what it was. I'd just never actually seen or read what it's actual function/operation was/is. It sounds dangerously close to what we had in our '99 Fleetwood Bounder 34V with the F-53 Chassis and the V-10. It had a "BCC" or, Battery Control Center that had/has what's called I think: Bidirectional-time delay-relay in it. When conditions are met, the alternator charges both house and chassis batteries. So, it definitely sounds close in operation. Thanks again for your info and help here.
Scott
