07-01-2014, 01:13 PM
Just the positive wires are connected to the Perko switch. I had the same problem with a low-level drain. The Perko switches are worth their weight in gold. I have 2 batteries and I can switch A, or B, or A & B together. It allows your main engine to charge them separately while you are running too. Probably not a huge issue unless you are down at Powell for several days and don't have any power source to charge your batteries. You can literally run the deep cycle battery for your trolling motors totally dead and then switch your switch to the second battery and always have the piece of mind that you know you have power to start your main engine.
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