Mine does not effect am fm or aux inputs. I don't use the cb that much and it operated fine before installing hid's but now continuously and intermittently breaks squelch since installing it. I only use the CB on group rides but it does get annoying to hear constant rushes of white noise, I did move the squelch to 20. I paid for the upgraded ballast so I will try the noise filter and see if that helps. Maybe it's more of a phase loop looking at running the ground back to the battery, and grounding the case to the battery - vs the frame.