Yes 3B, i have it on good authority that my truck is a 3/4 (you Guys). This was an external thing, as there was no light attached to the wire. The wiring was of the same vintage as the rest of the wiring and was concealed under the roof lining.
unfortunately i have no idea who even owned my truck before me. I believe he had passed away. As for roo huntin, i'm sure the truck seen some of that action. As an emergency vehicle, i very much doubt that.
Brendon