Any pics of that dome light? To my knowledge there wasn't a dome light in the prewar years, but I don't know everything. If there was a switch for the dome light I would assume it would be the same switch that illuminates the choke and throttle controls on the dash, but you know what they say about assuming.
John
Edit: Actually, I believe there was a dome light for panels and burbs, not sure where the switch is/was.
