Specific wiring for Bi-Xenon headlight retrofit with automatic headlight adjustment for Audi A4 B7 (8E) This wiring kit 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: Wiring kit Notes: After installation, the sensors must be recoded via diagnostics In most countries, the adjustment system is required by law in combination with xenon headlights