It's not a ac change. Please read what I posted, it's a ac installation maybe you don't understand what that means if not I'd be glad to explain it to you. I think that it would be beneficial for most on here to take a reading class so that you can comprehend what your reading. I've noticed that alot of you guys on here have that problem. Also, most on here for some reason have a hard time with staying with what's posted by other members this website would be more helpful to others by this being done.