Battery Setup
Looking for a little feedback for my new wiring plan. My v20 is a 1987 with a 205 Mercruiser. When I got the boat it had two new group 24 deep cycle batteries connected together with one of those Off-1-all-2 switches. Last year, I started having issues with the batteries always seeming to be low on charge. Through the archives on this site, I have discovered a few things;
1) I need to get a battery isolator installed to allow continuous charging of both batteries regardless of the switch position. 2) I need to replace one of the batteries with a marine grade, regular cranking battery, not a deep cycle. 3) I need to isolate the power feed for my accessories and lights so that it comes from the deep cycle battery alone.
So, from looking at my wiring diagrams, I have a power feed that comes from the engine harness to the front of the boat. The power daisy chains through the various fuse holders at the helm. In order to isolate the lights & auxilary circuits, I need to run an additional feed from the deep cycle battery to power these items. The only items left on the cranking battery will be the ignition, blower, trim, horn, and bilge pump. Is this broken up enough or should I add some more items to the deep cycle circuit? Thanks.
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