Don, They would have to be slightly less than .053 dia and RED. I am not stuck to using 1.5v bulbs. I am moving towards using LED when possible for their longevity. This will be a locomotive I do not want to take apart for bulb maintenance. If you can remember this suppler I would check it out.
I have a bunch of surface mount LED from Richmond I thought would work but they do not fit the lighting tubes I made. Thank You, Bill Lane Modeling the Mighty Pennsy & PRSL in 1957 in S Scale since 1988 See my finished models at: http://www.lanestrains.com Look at what has been made in PRR in S Scale! Custom Train Parts Design http://www.lanestrains.com/SolidWorks_Modeling.htm PRR Builders Photos Bought, Sold & Traded (Trading is MUCH preferred) http://www.lanestrains.com/PRRphotos.xls ***Join the PRR T&HS*** The other members are not ALL like me! http://www.prrths.com http://www.lanestrains.com/PRRTHS_Application.pdf Join the Pennsylvania Reading Seashore Lines Historical Society It's FREE to join! http://www.prslhs.com Preserving The Memory Of The PRSL
