This is my WRTL ARC 80. It has a Harvard leafnut branch node, which can control about 250 lanterns with Harvard leafnut leafnodes on them. It runs on a 100w SON lamp and it has a 100w Harvard electronic ballast.

The lantern can be opened up by undoing a metal clip on the front of the lantern, and lifting the canopy up.

Here is the reflector.

Here is the Harvard ballast.

Here is a close-up picture of the ballast

Here is the sticker.

Here is the lamp in its removable lamp holder.

The lantern powered up.