SENSOR Track pack by Cyril99

Morning, everybody,

I'm busy right now making proximity sensors for the coasters. But I don't know how to script because I would like that as soon as the train passes over the sensor, that the orange light that warns that the sensor detects the train is on and when the train is not on it anymore, that it turns off, Someone can help me to script or explain me how I can script.

Many thanks to crazy [align=][/align]