1.Application Fit for MK4 1999 2004, for B5 / B5.5 1998 2004, for 9N / 9N3 1999 2001, for for 1999 2010, for 1995 2005, etc. Manufacturer Part Number: 1C0941531, 3BD941531, 3BD941531A. 2.Application Fit for MK4 1999 2004, for B5 / B5.5 1998 2004, for 9N / 9N3 1999 2001, for for 1999 2010, for 1995 2005, etc. Manufacturer Part Number: 1C0941531, 3BD941531, 3BD941531A. 3.Intelligent Switch Set the switch to Auto. When the ambient brightness is lower/higher than the set value, the light will automatically turn on/off. And after the flameout, the low beam will continue to light up (time setting range: 0 60s). Smart settings. Provide a comfortable product experience. 4.Three lighting Modes Tunnel mode ( time: 1s). Normal mode ( time: 3s). Delay mode ( time: 5s). Size: 11.2 6.3cm/4.4 2.5in. Cable Length: 112cm/44.1in. aftermarket headlight control switch, with a sturdy plastic shell, not easy to crack, of high quality. 5.Battery The lamp will automatically turn off before the car starts. After the car starts, the light will turn on after 3 seconds. This can effectively protect the battery.