I have a 1989 venture bass boat with a evinrude scout trolling motor and has a 12/24 volt system. My question is does anyone know how to connect the batteries to have the 12 volt and the 24 volt system to work? I have 4 wires coming from the front of the boat to the rear of the boat. I have 1 red, 1 orange, and 2 black wires. How can I best utilize these wires to do this?