I had the fuse under the hood that would blow every time I replaced it, the problem was the amp. I had the Nak amp and had to replace it. I got an amp from R&J distributors http://www.randjdistributing.com it was more than $50.00 though. After replacing the amp everything was fine.
If you have the 12 CD changer, it will start to skip sooner or later, you might consider replacing that as well, saving yourself the grief later.
Michael