Still got the noise problem, u know gorund problem, whizz sound along with the revs...REALLY ANNOYING! lol
Anyhoo, still have the problem after regrounding deck, and it's not the rcas.
How do I know? Well I just took an rca and ran it straight to the amp, like not along the car just in the open not touching everything, same problem.
I am honestly stumped, what else could it be from? Ground? I tried a couple of spots same thing.
I really have no clue, oh and ground loop isolators don't work either...help?

List your products in the car for me.?
where are you amps grounded and how?

I "fixed" it I think.
You wanna know what the problem was? The deck!
I had a Clarion 725 in, swapped it out for a Panasonic 972u, and guess what? Noise GONE!
Switched NOTHING, just swapped deck and that was it> Now I'm really clueles....go figure.

i have a clarion deck the top of the line one with the dvd player and motorized screen... i hate it, one of the worst decks i have ever had