Hi all, first post here- just bought my first Mustang- a 1995 GT Convertible- only the tweeters work front and rear. I found some wiring in the trunk that looks to be from a previous amp installation as well as some RCA cables running up to behind the stock HU and CD player. All the wiring is intact and everything works great, just no bass/mid.. I am suspecting that the rear amps are blown? How can I test that they are getting power? Are there any fuses just for them? Your help is greatly appreciated!