DP Tuner messing with radio reception

[Charlie01]

I have noticed that my radio reception has been very poor latley and have not been able to figure out why. I read on another forum that somebody with a super duty had the same problem and blamed it on his DP Tuner. I have the DP as well so I went outside and tested the theory. I turned the key backwards so the tuner did not activate and the reception was clear as can be. I turned the key forward so the tuner would activate and it was very fuzzy again. Has anyone else delt with this problem or know an easy fix? I read about Ferrite Bearings but do not know much about them or how they work. Do you think this will fix my problem?

[JSchuricht]

From what I have read, the problem is due to lack of shielding in the cable from the chip to the switch. The ferrite's will help, just wrap the cable around one, or try rerouting the cable to the switch.