I'm surprised that it runs the rear tail lights.
However, it seems very reasonable that the system could have, or could be converted, to operate the dome light. I hate that my '62 doesn't have door switch dome lights. I was trying to figure out a way to put one in place to operate with the rear doors, and I think you just gave me the solution! Rather than run the switch in the body door jamb, I can mount it in the rear door itself, routed through the same tube that the license plate light is routed through.
-Brad
