wow , well let me see whats available for auto charging and do a little research im sure we can manually come up with a series of switches and a protocol to make it happen but , I would like to do it the best and simplest way for durability .and ease of use . Do you have a two battery switch installed now ? if so what type make and model and anything else you can think of would be great .thanks jeff

Jeff - no, I don't have a switch installed (yet). Apparently you can't just use automotive electronics. For marine applications its important to have intrinsically safe / spark arrest rated electric gear. I've heard guys have had fires from using auto or household electric gear on boats.

I'm treading water. My Honda mechanic is searching for solutions but its tricky stuff to do what I want and to do it right and safely.

-Eric