2mm LEDs are a pain in the but to work with. I'll start there.
After seeing Tony (Wombat457) put lights in his engine house, I just knew it was the right way to go, though. It has certainly been a learning experience. Glad I got 100 LED's to work with.
My first attempt at wiring up the lights was just with wire and wire alone. Not only did I find this messy, inconsistant and ugly, I found the contacts on the LED's were very fragile and able to break off very easily.
I also found that the bracing boards broke off easily and had to re-glue several of them.
Then I got smart and realized that I still had a bunch of PC Board lying around from the turnouts I built. So, I made little light fixtures that were much cleaner
and sturdier.
Each "fixture" is about an inch long and holds two LED's (as you can see). I tied two fixtures together for a total of 4 LED's going through each resistor (1k ohm). I have a total of 16 lights running through 4 resistors. It came out much cleaner and with much less damage than my all-wire attempt.
With all the top lights on, it kind of gives it a blue-ish glow...
But when the lights go off...
I think it looks pretty good.
... now I've got to build some doors...
or do I?