Blue Seas ACR not working correctly

[bfinley]

A just installed a second battery and the Blue Seas ACR 7610. It's working from the standpoint that my starting battery never gets drained. However, it's not charging my stereo battery. What did I hook up wrong??

[Thrall]

I dunno, only needs to have the 2 + leads to each battery and a small ground. The little light should come on "combined" when the charging voltage is above a certain voltage. Mine stays combined for quite a while after shutiing down the boat if I run the engine pretty hard and lay off the stereo.
Assuming your stereo load is off of the house battery, did you listen to alot of stereo and not much running the boat? I can tell if I have a day of mostly floatin tunes and not much running, it takes a while to fully recharge the house battery (on a battery charger).
Can see on mine, only the 2 + wires going to each dist block and the little ground wire.