Specific Xenon adapter for switching from halogen headlights to HID Xenon headlights for Audi A3 8V High quality adaptation Only one set is needed for both headlights Scope of delivery: Xenon adapter Notes: Note on the compatibility of the on-board network control unit The added single wires must be connected to the on-board power system control unit in order to release the Bi-Xenon switch Please keep in mind that in some countries it is prohibited by law to use HID headlights without automatic leveling We also offer the wiring for the headlight washer/wiper system if these are desired or required