Xenon Headlight Ballast — Reliable HID Ballast for Automotive Lighting Key benefits Variable brightness control: Provides adjustable light output to match driving conditions or preference, improving visibility and reducing glare when needed. Stable operation and protection: Starts the HID lamp reliably, sustains current throughout operation, and actively controls current to keep the bulb lit and operating within safe limits. Quick replacement: Standard plugandplay design minimizes installation time and fits the original ballast footprint for straightforward OEMstyle swapping. What it does (function) Initiates the HID lamp and supplies the voltage pulse required for ignition. Regulates and controls the current through the bulb during operation to maintain consistent light output and protect the lamp from electrical fluctuations. Delivers varying brightness levels depending on system settings or vehicle compatibility. Compatibility and fit Compatibility is determined by OEM part numbers. Before ordering, confirm that your vehicle's OEM number matches one of the OEM numbers listed for this ballast to ensure proper fit and function. Designed to factorystyle Xenon/HID ballasts using a standard connector and form factor for direct installation in compatible vehicles. Performance and attributes Performance: Reliable ignition, consistent current control, and variable brightness capability for improved night driving. Installation: Plugandplay electrical connectors for a fast, toolminimal installation process. Durability: Built for automotive lighting applications and OEM replacement use; designed to integrate with existing Xenon/HID headlight systems. Typical applications / use scenarios a failed OEM ballast to restore lost or flickering Xenon/HID headlight performance after ballast failure or water damage. Upgrade or an HID lighting system to gain better brightness control and more consistent illumination across driving conditions. Use as a direct replacement during headlight assembly repairs where the original ballast has been damaged or is no longer functioning. Important note To ensure a correct match and avoid compatibility issues, verify that your OEM number matches one of the OEM numbers provided for this ballast before .