Use a tiny surface mount LED. then stick it on with caulk or double sided tape.
Same link as before
http://www.dccconcepts.com/index.htm
Yup caulk should do the trick. It's Also easily removed if the bulb needs changing as well. Make sure you use the clear stuff.
Springfield PA
Elmer's glue or a dab of latex caulk. Hmm, cover the LED in glue and that may make it dim enough to look right.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
How will I Lodge an LED onto a roof? Where will I find a bulb retainer to hold the LED onto the roof.