Hooking up an aftermarket system

Question

i got a 2002 grand am

i had to get the special harness because of the door chime

i hooked up the cd player

but the amp and subs arent working..

then the cd player stopped working but it ejects and takes cd's fine

but shuts off

then my guages lights stopped work and the service engine soon

light came on

blown fuse?

I NEED HELP!!!

Answer 1

Take it to a professional.

Answer 2

It could be a grounding problem, check that.  

Answer 3

Wow!!! easiest way to fix all these problems is with a grenade.