alternator whine

Help with alternator whine

Ok, I have got a 04 Dodge Ram with everything you see in my signature but for the sake of reading I have a Pioneer AVH-P5700DVD for my HU. As the title reads, I have some alternator whine I cannot track down or get rid of. I will try to explain the layo9ut as best I can and as always please ask if I leaving something out.

My power and remote go down the drivers side while my copper shielded twister pair RCAs (2 pair) go down the passengers side. My amps are mounted behind the rear seats against the wall with both having 6" to 8" 8ga grounds going to a solid distribution block and then out of that with a maybe 8" 4ga ground to a solid bolt a star washer.

My switched 12v+ power I am pulling from my OEM harness as well as the ground. My constant 12v+ I am pulling from my upper most cig lighter.

There are two grounds that come out of the HU harness. One is a solo wire and the other runs with the yellow wire which goes through a black box which we all know to be a EMI/EFI box (electrical magnetic or frequency interruption).

In the schematic of the HU it shows both grounds going to the same place so that is what I did and again, they go to the ground in the OEM harness.

Now here is what I have done……

I don’t think it could be the amp itself because the pitch varies with the engines RPM and not a constant tone. Although I do have a few extra feet of RCA cable in the back (but are laid out straight and not coiled up), this could not be the issue because I bypassed all of it with new RCAs.

So I am at a loss here. Did I miss anything and can someone please help out a bit?

Is the engine noise barely noticeable, or is it so loud that the car next to you can hear it?

So loud the car next to you can hear it, Try this   http://bcae1.com/images/rca/temporaryrcashieldrepair.html

Barely noticeable, Turn every gain control of every amp all the way down.  Check to see if the noise is still there.