dude it doesn't matter how new a alt. is it can go anytime......espeacialy if you have a amp and some subs which is a killer cocktail for alt. plus check the cells of your batteries if they're no good you've staved the alt. of power which burns the resistors up ethier way you have to find the source of why your killing your alt so fast, unless you got a bad one brand new. what brand is it. denso., mitsu. etc.?