Car Xenon Headlight Mounting Kit AC 12V Voltage Ballast Car Van SUV Conversion Headlight Kit 55W Power Ballast. Provide starting voltage: Xenon lamps need a high voltage to stimulate the ionization of xenon gas at the moment of starting, the ballast can raise the 12V or 24V power supply voltage of the vehicle to this high voltage, so that the xenon lamps can start smoothly. Stabilizes the working current: After the xenon lamp is started, the ballast will reduce the voltage and current and stabilize it within a certain range to ensure that the xenon lamp can continue to emit light in a stable manner. 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