the first thing I thought was the ground....I have the back of the headunit grounded to a peice of metal behind the dash. I also have the headunit ground connected to a black/green wire that is suppossed to be the ground. I noticed that there are 2 of these wires, and one goes to the factory amp. I cut off the ground at the factory amp when I took it out. i tried hooking it up to both of the black/green wires and it didn't help at all.
What else can I do?
