I tried this in the satellite forum with no results. I get my pie adapter hooked up I get a high pitched whistle out of my right speakers. I thought it was the adapter but got a new one under warranty and same thing. This is driving me nuts. I've tried to ground it in different points and same problem. I have tried a different sirius p&p receiver so thats not the problem. I have my power wire for my amp running up the right side of the truck under my sill plate. If anyone has any advice it would be greatly appreciated. Thanks.