The Sun Light Node is automatically in every new Hype. To find the node make sure the logic view is enabled and look for this icon:
The light source in HypeHype is a directional light that provides consistent light throughout the Hype. Set the direction of the light by rotating the Light Node.
You can have multiple Sun Light nodes in your Hype but only 1 can be enabled at a time.
Here's a link to the hype that shows how to implement and use the Sun Light node: