Material and build - This ballast controller is made of high-quality metal, rubber and ABS materials, providing wear resistance, sturdiness and durability. This is a high-quality product. Installation and compatibility - Easy to install, with no modification or programming required. Plug and play. - Designed to be directly connected to your vehicle without coding or programming, ensuring straightforward compatibility with HID headlight systems. Performance and reliability - Xenon ballast starts quickly and operates with a small current. - Helps increase the irradiation distance and lighting range. - Advanced electronic ignition technology delivers stable high-voltage output, with less electrical interference and reduced flicker, and it is not easy to damage. Function and operation - HID headlight ballast powers the headlight bulb and regulates voltage and current to ensure the light produced is uniform and stable, without flicker or attenuation. - Each ballast is designed for direct connection to your vehicle without coding or programming. Use scenarios - Replacing a failed HID ballast on a sedan, SUV or truck to restore reliable headlight performance. - Upgrading HID lighting on older vehicles to improve start-up speed and lighting range without needing any coding. - Automotive repair or fleet maintenance settings where quick, plug-and-play ballast replacements are needed to keep multiple vehicles illuminated.