its probably not a bad one, considering his OEM blew too.. but harry i think you may have a short or something thats putting a lot of stress on it which is causing it, because really, you had relatively the same amount of electronics(the same thing - the sun visors + PS2) on the old alternator, which was much smaller, and you ran that fine for a WHILE and then all of a sudden it went out, then a month later, with a MUCH bigger alternator it goes out again