Complete automatic retrofit kit for upgrading from halogen to Bi-Xenon for Audi A4 8H Cabriolet Selectable options: up to model year 2006 from model year 2007 Scope of delivery: Wiring Xenon adapter Control unit Mounting plates, sensors, screws Notes: Fill in all vehicle-specific fields for your order. After installation, the sensors must be recoded via diagnostics. In addition to xenon headlights, you also need headlight washer jets. This option is often supplied with the winter package from the factory.