According to Nigel Calder, you should never run your DC ground directly from the distribution panel to the engine
block. What are the ABYC standards and what are common practices? (And because this is an internet
forum, I expect to get plenty of "what do you do") Should we leave the bus to engine
block cable, or reroute it back to the batteries?
Also, my husband seems to think that we do not need an isolator nor an ACR. The isolator that came with the boat was not wired correctly - the two banks were connected, but not the alternator
. As such, he wants to just use the battery
switch. My concern is the possibility of frying our brand new AGM
batteries when we start the engine.