12v electrical newbie here....for keeping an eye on the juice in my marine battery, is all I need is a meter like this wired on it's own circuit from my galley mounted fusebox? is it that simple? or am I missing the whole concept - which is entirely possible...
12v only system running only a couple of lights, a Fantastic fan, and a really small inverter(300w) that will be used rarely. The battery will probably be the largest available from WalMart