headlight control switch, high quality.According to the specifications, it perfectly matches the car. to use, no decoding required, built-in light sensor module.Replace the manufacturer part number for reference: 1C0941531, 3BD941531, 3BD941531ASuitable for: B5 B7 Transporter T5 Mk6 Golf 4 6Note: Automatic headlightSet the switch to AUTO and the light will automatically turn on/off when the brightness is /above the set value.Three lighting modes:A. mode (reaction time: 1 second)B. Normal mode (reaction time: 3 seconds)C. Delay mode (reaction time: 5s)Automatic fog light: In a dark environment, the fog lights are turned on with the low beam after the car is started (this function is turned off by default)Flameout mode: A. The low beam will continue to light after the flameout (time setting range: 0-60s)Rapid response: It takes less than 1 second to automatically turn on the headlights.Protect the battery: The car headlights will turn off automatically. After the car is started, the light will after 3 seconds.Unlock the lights: When the brightness is low, the indicator/low beam will automatically . (Time setting range: 0-60s) Features: AUTO Headlight SwitchItem Weight: 150gModel Name: AUTO Headlight Switch For Item Type: Light Switchcolor:BlackMaterial:plasticPackage Contents:1 x Car Headlight SwitchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.