Oh and by the way, I have heard that alot of the 1 wire alternators will draw current at all times. How much I dont know. There are some GM alternators that require a small 12 volt trigger wire that basically tells the alternator to turn on internally, those dont drain the battery. I believe the one like you have is basically "turned on" at all times. I do things different than most, I dont wire my alternator to the B+ side of the switch. But I also use a 4 post battery on/off switch and I use the two small terminals for my MSD ignition trigger wire. That way, when the on/off switch is switched off, it works the same way as you turning off the ignition switch but it also seperates the battery from the ENTIRE electrical system also. You wont have a battery drain problem unless there is a on/off switch problem or a battery problem. Just my 2 cents.