I'm having the same issues with the noisy fuel pump and the CB... I haven't tried any of the suggested fixes yet, but my mind wanders off to an episode of mythbusters where they built a cage with some form of metal mesh walls that blocked out all of the RF signals. They even showed the bars on a cell phone as it entered the cage going to zero.

ah yes, here we go:
http://community.discovery.com/eve/ubb.x/a/tpc/f/9801967776/m/679106226

What are you guys' thoughts on this? I may have to experiment with it a little as the buzz effectively makes my CB useless while the engine is running.