I'm getting alternator (or what I assume is alternator) noise in my rear speakers only. What can I do to prevent this noise?

I have tired checking some grounds, but can I put something around the wires to prevent the interference? I cut back some wires to install a cd changer, and thats when the noise started.

I tried looking for a possible wire that is loose, but I haven't see anything yet (I will be checking again tomorrow). I just am at a complete lost of where the noise is coming from :(
What can be done that I haven't tried yet?

Thanks guys

are any power wires crossing the speaker wires?

oooo! I never thought of that before, I'll will certainly check for that.

Anything else?

Just to keep your power and wires as far apart as possible to reduce noise.

can I use any kind of shielding to keep them apart? I was just thinking, i bet aluminum foil would work, but then i thought about it some more, and i didn't like the idea. what is best for shielding, and i will definately be moving the wires today

anybody have a wire diagram to tell me what the colors mean?

Is this the stock radio? I thought you were talking aftermarket.

Aftermarket...run the power on the opposite side of the car from the speak wires.

Stock...check your grounds.

my apologies, it'* stock, are there grounds going ot the radio/amp under the radio?

I'd check the battery cables to start. they are known for corroding etc.

Other memebers should have more ideas