Lighting my way.
I believe that if you want old style lighting that looks like old style lighting in miniature, then that is exactly what you must try to reproduce, old style lighting in a miniature setting.Yes wiring,bulbs and fixtures just like they used to be.For my own work I have gone far out of my way to try to reproduce that look even though if as it turns out now it was only for my camera.My dioramas were never built for museum purposes although in the end it turned out that way.
I have always had a thing for creating moods or atmosphere using lighting ,I don't know why but it has always been there for as long as I can remember.
About fifteen years ago when I first looked into the subject for lighting my first diorama I relied upon the RR guys at my hobby store for basic information so I used RR type locomotive headlights for bulbs.I had no idea about the doll house scene at that time and their much easier ways of doing things,so I came up with my own handmade wiring plan.It was a nightmare but suffice it to say I did get it working using a train transformer as a rheostat.
I never took many pics back then so I won't even bother trying to explain how it worked.
The next diorama was simplicity itself .I took two five watt Christmas lights for internal lighting and lit the rest from outside using my hand held ,handy dandy reading light to create a barn like type setting.(see pic)
The third diorama I went back to overhead lighting using fixtures,about 35 or so in all.Each one hand made using Radio
Shack type wiring and doll house type bulbs this time but again using a train transformer which of course was overloaded so it had the nasty habit of turning all the lights out after about ten minutes.For my picture taking purposes I really didn't need them all on at once anyway.
The fourth diorama,an outdoor scene has no lighting at all so far although I am planning a little lighting in the individual rooms behind the brick facade probably using LEDs.
For the most part I am happy with the way it turned out for my own picture taking purposes, which is really why I did it this way in the first place.If I had used todays more modern ways of doing things I just don't think that it would have ended up looking the same somehow.