Specific wiring harness for upgrading Bi-Xenon headlights with automatic headlight adjustment for Audi A4, B7 (8E) This cable set connects the headlights to the rear and front level sensors as well as to the central electrical connection A xenon adapter as well as components for automatic adjustment are also required Scope of delivery: Cable set Notes: After installation, the sensors must be recoded via diagnosis In addition, with xenon headlights you also need headlight washer nozzles. This option is often supplied with the factory winter package In most countries, the adjustment system is required by law in combination with xenon headlights