[Prerunner1982]

Run the power and the ground for the CB directly to the battery. Separate the wires for the CB and the wires for the stereo as much as possible. I had a similar problem in my Jeep when I had my amp and speakers in it, the RCA cable was running along the transmission tunnel, right by the wires for the CB and by the CB itself. Unhooked the RCAs from the stereo and it took care of most of the noise. I think power and ground to the battery should fix half of the noise issue you have.