First off this ins't my first install. Ok I put everything in my dad's car. Then when it is running there is a hissing noise. I was under the impression that the problem is a bad ground, so I unscrewed all of them and put them back. Still noise. Then I pulled the power wires away from the speaker lines on the amp still noise. So If anyone could help out I would apreciate it.
yeah.. try to keep your RCA as far as possible from the power cable because RCAs tend to catch the noise that is given by power cable and the noise is amplified later and ends up in ur speakers...