Hey guys wondering if anyone can point me in the right direction. I've got a dual battery setup. 1 starting and 1 house. Ive got an acr with a 1,2 combine switch and was just gifted (for a 30 pack) a guest onboard charger that would charge both batteries. Without the acr I would just connect each of the two sets of guest chargers leads to each battery but Im not sure if I would connect it the same way since the acr and the 1,2 combine switch is involved..

The charging leads go right to the batteries. Not thru the switch. You can charge both batteries with the switch off
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cool thanks Mike :)

This is why I just hire TJ to do my boat wiring.

same here but He's doing glasswork for animals bertram today :) I figured that charger seemed easy enough :)

The charging leads go right to the batteries. Not thru the switch. You can charge both batteries with the switch off
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And make sure to fuse the hots to each battery.