I'm adding a second battery to my 19' bowrider, 3 liter MerCruiser powered.
I primarily want the redundancy of a second battery in case the first one
fails, but I have added radar, GPS, VHF and a utility outlet to power other
stuff like a searchlight.
Already had the battery, switch and an isolator; went to buy the necessary
wires and connectors and came home with a combiner and zap-stop to use
instead of the isolator.
Anybody have any suggestions or preferences of isolator/combiner?