OEM low beam HID bulbs for the Focus are $179.35 each from FoMoCo. The part number is YM2Z-13466-DA. For that price, I hope and pray the igniter comes with them!!! The ballast is $494.69, part number 2M5Z-13C170-AA or Motorcraft DY-986. My parts catalog says the ballast is located on the bottom of the headlamp assembly. It just doesn't say which lamp.