Lionel BW-80 transformer light bulb change- how to & which bulb?

BTW, a photo from the 2015 post about the BW, shows that the bulb plugs into a socket on the board.  It looks like the socket for a recent-vintage incandescent miniature Christmas tree bulb.  If it is, can an LED be found that will fit the same socket?     

Silly me in thinking maybe the green bezel just unscrews like on postwar transformers...

Can you get the controller apart? You may need a special screwdriver to do so. Once the case is off, the bulb should be easy to change.

Larry

@TrainLarry posted:

Silly me in thinking maybe the green bezel just unscrews like on postwar transformers...

Can you get the controller apart? You may need a special screwdriver to do so. Once the case is off, the bulb should be easy to change.

Larry

It doesn't unscrew. I wondered if anyone knows if it prys out.   

I took mine apart a long time ago. I think I used a regular Phillips head screwdriver and took the case off. From what I recall I just stuck a 18v passenger car bulb in the socket and it worked fine.

@Train Nut posted:

I took mine apart a long time ago.  I think I used a regular Phillips head screwdriver and took the case off. From what I recall, I just stuck a 18v passenger car bulb in the socket and it worked fine.

Thanks!   (So, the green lens does not either pry or screw off, then?  Darn!)