Specific Xenon adapter for upgrading from halogen to Xenon with/without cornering light Suitable for: Audi A4 B7 Audi A4 8H Cabrio from Mj. 2007 Seat Exeo 3R High-quality adaptation Only one set is needed for both headlights Scope of delivery: Xenon adapter Notes: The added single wires must be connected to the control unit of the on-board power system in order to release the Bi Xenon switch The cornering light will only work with the automatic leveling unit In most countries, the leveling system is required by law in combination with xenon headlights