Can anyone help me out here? I got the Sierra spec kit yesterday and installed it. Install went well, headlights work great but I noticed a slight buzzing sound sometimes from the ballast on the drivers side, and it goes away and sometimes it sounds like it's the igniter. I can't hear any buzzing whatsoever from the passenger side. I can also only hear the buzzing with the engine off. Lights seem to work well, they both turn out fine and are steady. I think I did notice the smallest amount of flickering while driving on a dirt road though. It was very minimal though. I tried reversing a few plugs and nothing. Anyone have any ideas? It's the Sierra spec morimoto kit with 35w ballasts and 4500k bulbs. Thanks ***Update, I think it wasn't flickering but rather just the washboard road and because the lights are brighter, that cutoff can be slightly more jumpy. However the slight buzzing on the one side remains.