HI I HAVE JUST BOUGHT A SET OF L.E.D LIGHTS FOR MY AUDI A4 B8 THE NUMBER ON THE LIGHT IS 8K0941004 BUT THEY DONT HAVE BALLASTS FITTED COULD ANYONE HELP ME WITH FINDING PART NUMBERS FOR THE BALLASTS I NEED AS I THINK I HAVE FOUND THE ONES I NEED BUT THEN THERE IS A DOUBT IN MY MIND AND I DONT ONE TO LOSE MONEY BY BUYING THE WRONG ONES THANKS FOR YOUR HELP:thumbsup: