E32-3 Adding Additional House Batteries via the Starter Battery Cable

Summary: If you mount a remote OFF-1-2-ALL (let's call it a OFF-HOUSE-START-ALL) switch to the end of the Starter battery cable, that cable then becomes dual-use for multiple banks. Say, for example, to keep the existing Start battery on the START side of the remote switch and then to add one or more Deep-Cycle batteries to the HOUSE side of the remote switch (each, alternately sharing the START battery cable).

The full story: This one came to me totally by...