Everyone is correct!!!!!!!!!!! one wire means one wire. As I asked which alt are you using? A marine one wire deal is a self tickler and to the big post on the starter gets er done. I personally don't spend the extra bucks to buy a marine one wire deal. I wire the boats I have built with a GM internal regulator and create the tickle wire the way I stated and save a few bucks. Also I have never had a drain on the battery. My boat is sitting and I could go out and fire it right now and I do not diconnect the battery. M