Xenon Planet is the leading high quality and affordable car parts provider in USA, Australia, Canada and all around globe. Xenon Planet take pride to offer Valeo Ballast7Green 89089352 Xenon Control Unit. It is used with mercury free D3S D3R D4S D4R 35W HID bulbs. The most common malfunctions with faulty Valeo ballast is then your Xenon Lights to start to blink, shutting down without any reason at random time. we always recommend to change sides HID bulb before replacing ballast in this case you will be 100% sure that control unit has failed. It is direct replacement, no coding will be required after replacing old part. For more information about the product visit our website.