I have a left hand drive 2010 model year Audi A3 cabrio with halogen headlights. I am doing an oem xenon retrofit. I have oem xenon headlights, ballasts and bulbs. I also need to get adapters. Is this what I need to get? Adapter Bi-Xenon Scheinwerfer A3 8P & 8PA Facelift- thanks for the help.