i just bought a motor guide trolling motor and two deep cycle batteries.i have the factory controls wich are
lug with a trim button on it,the other is a battery test with a guage and a bat 1 and bat2 selector switch.i just want to make sure of my connections.what i have is a battery tray for both with two sets of black,red,orange wires.the black and red are explaine themselves but the orange goes were?and for what.and if this set up is for 12 or 24 volt.the trolling motor is set up for 12 so if i hook up two is it in parrallel or series? the boat is a lund pro v 1660 1993 thanx.