Headlight Control Module Compatible With For E81 E87 E82 E88 2007 2008 2009 2010 2011 2012 89034934 4L0907391 63117180050 H-ID Xenon Ballast Headlamp Control Unit Module

Controlled power: H-ID discharge bulbs are connected to a ballast that controls the voltage and frequency of the current to ensure the bulb gets the right amount of power. The ballast is usually mounted on the rear or bottom of the light tower. Quick Start: The ballast is what helps your lamp ignite quickly. When the lamp is on, the ballast supplies a high voltage peak to the lamp. This helps to establish an arc between the two lamp electrodes, which causes the H-ID bulb to ignite. Easy to Install and Use: The headlight ballast control unit module is easy to install, no complicated tools are needed to complete the installation, and it is easy to use, saving you time and energy. Tips: Please check your car accessories before purchasing to make sure they are the same as our products. After-sales service: If you have any questions about the quality of the product, please email us in time. We will help you.