My boat had an old Evinrude Scout 12/24 trolling motor. I just bought a 24 volt Maxxum off of a crappie.com member. Picking it up tomorrow. My old motor has a 3 prong plug. Do I just make sure that the wires from the new motor are on the correct prongs. If I leave the receptacle like it is but make sure the Maxxum uses the 24 prong am I OK?