I noticed this for the first time this morning after nearly a month and a half. I have the Diode Dynamics kit with relay harness installed. This morning, I was getting static in the radio when my HIDs were on, I also noticed a slight flickering of the HIDs. I got to work, decided to try it again and they weren't flickering or buzzing anymore. The problem fixed itself. I went over a couple speed bumps, so maybe there is something loose somewhere... I have no idea.