How to specify light vector and light position in material editor or blueprint

For which node? The majority of the nodes above are custom to my setup, is there a particular one you can’t find?

The “Material” node is a variable of type Material
The “Mesh” node is a variable of type StaticMesh
and “MatInstance” is a variable of type MaterialInstance

The “SunLightSource” node is a variable of type DirectionalLight