Radio wont work :(

[grahamsy2k]

So yesterday I replaced both of the rear shock mounts and I found out that the ground wire for the amp and or stereo was connected to the shock tower, ( I didnt put it there) so I had to take it off to replace the shock mount and when I put everything back together, the head unit on the stereo wont turn on, and the RPM gauge wont work and neither will the MPG gauge.

So whats going on?

[StereoInstaller1]

ALWAYS disconnect power BEFORE ground.

Fix your shit and replace the fuses, all will be good unless you toasted something.