Wiring harness for automatic retrofitting from halogen to Bi-Xenon / adaptive lighting for Audi TT 8J The Xenon adapter as well as the components (depending on factory equipment) for the automatic retrofit are also required Selectable options: with cornering light ASF with Bi-Xenon Scope of delivery: Wiring harness Notes: Fill in all vehicle-specific fields for your order After installation, the sensors must be recoded via diagnostics Please check in advance whether the control unit of the central electrics supports coding for xenon or not