[pillardsap]

Thanks so much for the help, I will take it to an audio shop to test the ground. The sound really seems constant and does not change much. I was going to have the thing taken out and replaced with a stock unit, and then found out it was a very good radio in it's day. SO I may keep it if I can get this screaming fixed. Some friends of mine say it is coming from the drivers side speakers, door and dash. Thanks again. I believe it is a one piece head unit and can find no added amps or anything in the car. Oddly enough it has a sallelite radio antenna and I think the subscription must have been prepaid as I am getting stations, as much as I can tell over all the sqealing.
Sheri