Front Wheel Well lights. Anyone seen these before?

[VAPhil]

Greeting family. New proud owner here of a 72 shortbed cheyenne. Been fiddling with minor cosmetic stuff recently. Discovered two green front wheel well lights which appear to be original; they have mounting brackets and wiring boots/connectors which look as old as the truck itself. Anyone know what these are called or where i can get replacement bulbs? One works, one doesnt. They only come on with the headlights, and arent wired into the turn signals. They are pretty heavily corroded, so i'd like to only clean them if i have to. (Sorry for the one pic. I cant seem to upload multiples. Such a rookie...)