The Layers and Light Switch are the crucial parts or this Park Lamp.
Insert a Switch and rename it to LightSwitch
Add a Layer then drag and drop it inside LightSwitch
Add a Visibility switch and drag and drop it inside Layer1
Drag and drop your light inside Visibility
Add Jitter to the mix and drag and drop it inside visibility as well.
Set the Jitter to 0,7 - remember to use a comma and not a dot!