I've got a Gravley that had a Kohler Chaos...I mean Courage. Blew up and I replaced it with a 25 HP briggs Intek 445777. I'm making progress on the rewire, but, there's a red wire coming out of the regulator that doesn't match with existing wiring. I think it's supposed to go back to positive side of battery for recharging. Yes? Thanks, Mike K.