Here is the deal, I will be adding a system to my boat very soon. I currently have two batteries, 1 cranking, 1 deep cycle marine/RV battery (used for trolling motor). I want to install a perko switch and run all the stereo and amp stuff off the deep cycle. When installing the perko, can’t I just take the pos wire from the cranking battery and hook that into the comm. Also, do I really need to hook up the alternator f connect. Next issue, will I be able to use the deep cycle as my second battery or will I have to get another one. Won’t the engine charge the deep cycle when the switch is set to all and the boat is running? Thanks for your input in advance.
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