Specific Xenon adapter for upgrading halogen headlights to HID Bi-Xenon headlights for Audi A3 8P & 8PA Facelift Only one set is required for both headlights Suitable for Facelift headlights (LED) High-quality adaptation From model year 2010, the control unit of the central electrics must be replaced (in some cases models before 2010 as well) Item number 37529 is suitable for vehicles from model year 2010 Selectable options: 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 control unit for the automatic upgrade We also offer the wiring for the headlight washer/wiper system if desired or Please keep in mind that in some countries it is against the law to use HID headlights without automatic leveling.