I know this is another one wire alt ques. but I'm confused, they say to have the alt gauge idiot light wired to new alt cause you need the resistance for it to work, right? well that bulb is on as soon as I turn the battery switch on with ign off, is this right? what if I wouldn't have the cut off switch for the battery, did I miss something? or is this the way it should be, I know not everyone with the one wire conversions has a cut off for there battery, there battery would go dead.