I think you might have misunderstood me. I was talking about a crossover, or more commonly known as an isolator.
There wouldn't be any mods to the dashboard. All an isolator does is isolates the batteries, so they are not "bank" charged. Just do a search on a battery isolator, and you will get many hits. It connects to the alternator (+) and from there goes to the batteries. Here is a link to the first of many hits. But I'm sure you can find much cheaper sources http://www.newmarpower.com/Battery_Isolator_Integrators/Battery_Isolator_Integrators.html Also might look at the intergrator just below the isolator, its a different option, that does something similar. This was in response to your concern of one battery going dead, and dragging the other with it. "I'm not ready for a major panel redesign yet, probably never. With all the additions and changes over the years it could well do with a panel makeover"
