I've been through a lot of tech. lines at the drags, with bat. in the rear, and the best I can remember, no one never ask me if my alt. had a cut off on it, so I'm saying as long as you disconnect the bat. it don't make no dif. what your alt does. some people cut them off for more power, but for nothing else. what safety factor would it be anyway with the bat. cut off at the back of the car and the alt. cut off on the dash. safety people wouldn't know that.??????????