Hi guys Long time reader, 1st time poster and apologies for it being a problem already! Driving home the other night and one of my xenons went out, drivers side, did a search on here, swapped the bulbs around, and they are fine, its the ballast i need but dont fancy paying audi £500 for a new headlight! Please Please Please does anyone know where i can buy the ballast from? Ive looked on HIDS4U.co.uk and dont know which one it is! they are not able to confirm either, all you can do is compare pics! Any help with this one would be very much appreciated guys!