The Vemo Xenon Headlight Control Unit (part number V20840018) is an essential component in the operation of xenon headlights. This unit is responsible for controlling the voltage and current supply to the headlights, ensuring proper functioning and longevity. It is specifically designed for use with xenon headlights and is a direct replacement for the original equipment unit. The Vemo Xenon Headlight Control Unit is a high-quality, reliable component that is essential for optimal performance of xenon headlights.