Your stereo installer sucks. The whine noise, does it get louder as you accelerate?
If it does it's the ground, it's loose or it's not grounded to the chassis properly.
As for the CD player, it's a factory there's not much you can do. Try removing it and placing some kind of foam underneath it.
As to sorta cushion it a bit. but not too much because you still have to let it breath. If it gets too hot it will F*&^ up.
Hope that helps. Peace.
If it does it's the ground, it's loose or it's not grounded to the chassis properly.
As for the CD player, it's a factory there's not much you can do. Try removing it and placing some kind of foam underneath it.
As to sorta cushion it a bit. but not too much because you still have to let it breath. If it gets too hot it will F*&^ up.
Hope that helps. Peace.