OK, I am not a dentist so I am not going to sit here and pull teeth to get information.

1 You state that you have aftermarket rear speakers, subs and amp.

Problem: You don't state what's hooked to where, nothing

Problem: Your new amp is "shot"

Now based on the little information you have given, I can't tell you the amp is shot. I can tell you that I have had literately dozens of people come to me to tell me their amp is shot only to find they had the box sliding around in the trunk and the remote turn on wire, one of the power wires, or it slid into something and broke the RCS's or damaged/knocked out the fuse.

Need Moar info, is I think what the kids say.

Jeff