Grounding the RCA's to the deck? Well I finally got bothered because the **** alt whine got louder and bothered the living heck out of me. So I pulled it out and took off the ground, and re-grounded it to the chassis instead this time. I had it grounded through factory (which where my 9835 was grounded and had no whine). So far it stopped but I'm going to drive around and so forth to make sure its not there no more. If that doesn't work I'm going to try straight to battery, if that doesn't work I'm sending it back. So far its fine. I hope it doesn't come back.