I would like to upgrade my TT, Bj 99, 180 HP from halogen to xenon. I bought a set of xenon headlights at EBay. My problem: The halogen headlights have a 12-pin connector and the xenon have a 10-pin. On request for cable adapters, however, these are only vice versa, from 10- to 12-pin. Who can help me?