E46 Fanatics Forum banner
  • Hey everyone! Enter your ride HERE to be a part of this month's Ride of the Month Challenge!


  1. Lighting Forum
    I'm retrofitting my stock ZKW Halogen headlights with aftermarket projectors. I just ordered a pair of OEM Ballasts. The ballasts have three plugs. I know what 2 of the plugs are for but I'm not sure about the third one. I've attached a couple of pictures. The only thing I can think of is...