Daytime running light LED module for A1 S1 2011-2014 xenon headlights 8X0998475 Function: This xenon headlight drive control module can convert voltage, stabilize current, prevent pulse surges, control lighting brightness, and ensure that the headlights operate in a safe environment Features: The headlight control unit module is manufactured using processes, features design, rapid start-up, supports strobe function, high brightness, stability, reliability, and performance Headlight driver module, intelligent decoding eliminates faulty lights and improves light stability。 Xenon ballast, low power consumption and high brightness, no decay for long time use。, Manufacturer: LLYIXUAI