HID XENON BALLAST IGNITER D1S D2S D2R LAD5GL 4pin 12V For Citroen 6224F9. Durable and robust materials: The heat-resistant metal casing ensures a long ballast lifespan. Designed to withstand vibration and extreme weather conditions. Function: The basic control unit for the HID headlight system, ensuring high beam compatibility and thus improving visibility. Installation: This ballast retrofit kit is easy to install and perfectly compatible with your vehicle. No complicated operations or modifications are required; it is simple to use, saving time and effort. Customer Service: Please ensure the part number of your car ballast matches the part number you are replacing. If you are unsure, please feel free to leave us a message., Manufacturer: HNHLSM