Specific Xenon adapter for upgrading from halogen to Xenon with/without cornering light for Audi TT 8J High-quality adaptation Only one set is required for both headlights Selectable options: from 2010, with LED daytime running lights up to model year 2009 from model year 2010 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 lights