First off, I owe a huge thanks to everyone on this board for all the great topics here. Lots of great info. So, I am having what seems to be a common issue. There is a hiss coming from all the speaker when any source is selected. When the music is paused, silent break on the radio, or between songs there is a very prevalent hiss. It gets louder with the volume. I have unplugged everything. All that is plugged in is the necessary wire harness. No amp, antenna, gps, a/v inputs, removed the hard bypass nothing works. I have tried connecting the ground to the chassis and no luck. The odd thing is
