When it is dark, it will turn on the width of the light and the headlight automatically (only control the dead beam). That's sensor control for two. When it starts to get dark, the width light will turn on when it gets darker, and then the headlight will turn on. When the day break, both the headlight and the width of the light turn off automatically. When the car through a, the light will turn on. Leave, light offLeaving the house and home function. Suitable for Vehicles:For 2012 AveoFor Cruze 2010 2011 2012 2013For Opel j 2012 2013 2014 2015 2016 2017 2019 2018The module is directly connected between the switch of the original car and the cables in the bundle. Install:White connect to +12V (only if the key is able or on can output)Red connect to +12V power supply (it is a 12V battery, no matter what the condition of the key, there is an output)Warm tip: use the fuse box of the cap or multimeter to find this item. Color: BlackMaterial: ABSoundrel Value:1 x Sensor Control Module Headlight SwitchOnly the above package content, other products are not included. Note: The light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.