So far, four different posters have suggested that domes were not lit up on real trains, and one of them actually rode a dome at night. Do you guys still think that Lionel made a major mistake?
If you are trying to look out the window at night, interior lighting completely destroys the view. On the other hand, folks outside can see what you are doing with your girlfriend.
There had to be some lighting, no one could walk up there and head down the stairs in a rocking, moving train without some lights. Seems all they wanted was a soft glow.