Upgraded to a bigger Lund boat this year for my trip to Little bay in two weeks. The boat has a battery switch on it next to both starting batteries. If i'm hooking up a charging system do I connect it to one battery and put the switch on two or hook it up to both batteries. Any help would be appreciated. Water temps seem a bit high this time of year.I will be up there in 10 days and 18 hours... Lookin forward to spending the whole week in the worlds greatest place.

Thanks,
Cliff.