
When it get dark , it turn on the width light and headlight automatically ( only control the low beam) . This sensor control by two . When it start dark , the width light turn on , when it become darker , then the headlight turn on . When day break , both headlight and width light turn off automatically . When the car through a tunnel , the light turn on . exit the tunnel , light off ! Leaving home and home function. Fit for below vehicles: For Aveo 2012 For Cruze 2010 2011 2012 2013 For j 2012 2013 2014 2015 2016 2017 2018 2019 The module is directly connected between the original car switch and the wiring harness. Install method: White connect to ACC +12V(Only when the key is in ACC or ON state can output) Red connect to power +12V (This is the battery 12V, no matter what the state of the key, there is output) Warm tip: Use fuse box cap or multimeter to find these position. Colour: black Material: ABS Package Contents: 1 x Headlight Switch Control Module Sensor Only the above