Second, I took a deep breath this morning and replaced Calypso's factory battery selector switch with this neat combiner from Blue Sea Systems. It's designed to work with one engine and two batteries; I did the connections to work with two engines, two batteries and an automatic battery combiner for charging.
"The new E-Series switch isolates your Start and House battery circuits, preventing accidental discharge of the Starting bank and also protecting your electronics from engine starting sags and spikes. Ideal when combined with a BatteryLink Automatic Charging Relay or isolator, which will automate charging, while the new Dual Circuit Plus will simplify the switching."- West Marine
In other words, no more waking up mornings in the middle of nowhere with two dead batteries after forgetting to switch from "Start" to "House" the night before.
Little things count.
