Simple G-LUX mount I made because I could not ship the OEM version for a project in time. Noticed that no one had made a 3D print version yet so I am posting mine.

 I have also included the Fusion CAD file if you just want to take the mount geometry and create a new mounting plate. The mounting plate is coped from available technical drawings it snaps into place beautifully.

Print Settings Notes: 

I would actually recommend not printing it bottom mount side down but on its side with supports. This will make the mount post more resilient to the forces on it from the mounted light. 

Use a finer layer height like .2mm and an outdoor suitable material like ASA.