Features:100% Brand New Aftermarket Headlight Control Switch with Premium Quality. Set switch to auto, lights will turns on/off automatically when ambient brightness is lower/higher than the set value. Quick response - it needs less than 1 second to be automatic open headlight. Protect your battery - before the car starts, lights turn off automatically; after the car starts, lights turn on after 3s. According to original factory specifications, perfect match to original car. Robust plastic housing, not easy cracking, ultra sturdy. Directly replace the old or broken power window switch, easy to install. Replacing manufacturer part number for reference: 1C0941531, 3BD941531, 3BD941531A. Specification:Condition: 100% Brand NewMaterial: ABS PlasticColor: BlackManufacturer Part Number: 1C0941531, 3BD941531, 3BD941531ASize: 10 x 6cm/3.9 x 2.4inCable Length: 112cm/44.1inPackage Weight: approx.197g/6.9ozThree lighting Modes: 1. Tunnel mode (Reaction time: 1s) 2. Normal mode (Reaction time: 3s) 3. Delay mode (Reaction time: 5s) Fitment: Fit for MK4 1999-2004Fit for B5 / B5.5 1998-2005Fit for 9N / 9N3 1999-2001Fit for Seat:Fit for SEAT I (7V8, 7V9) (1781 - 2792 , 90 - 204 PS)Fit for I Hatchback (6Y2) (996 - 1984 , 50 - 130 PS)Fit for I Hatchback (1U2) (1390 - 1984 , 60 - 180 PS)Package list:1 x Headlight Switch with Light Sensor ModuleNotes:1.The compatibility is just for reference. Please compare the Part No. with your original one before purchasing!2.Please allow 0~1 inch error due to manual measurement. Thanks for your understanding.3.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..