Trevor, thanks for appearing on our Guest Expert Forum. I have a Balmar 100 amp alternator and three-stage regulator. The starting and 500-amp house banks are isolated by a factory-supplied relay. Anyhow, I have a suspicion I am not getting the full output back to the house batteries. Someone in a prior post indicated he had disconnected the relay and that it had prevented full charging to the house bank. That may be, but I don't know why. What's your take and what diagnosis do you suggest? Rick D.