on the back I used to have on a series a pole mounted vertically that held the light on a spigot with a water proof plug in the roof. (light on pole small lead to plug)
adjacent to it was a nother small set of holders that held 2 pipes, both with the electrical connectors on it (think extention cords) so that they could be screwed together and put on the spigot with the light on top to elevate the lamp.
Not hard to setup or water proof and the poles doubled as jack handles.

