Perhaps a picture will also help. There are three versions of the AM passenger car lighting boards. The earliest, at the bottom of the picture just has the three incandescent bulbs. This came out of one of the long out of production lightweight 80’ scale cars when I replaced them with LED’s.
The one in the middle is likely the one Terry used and is out of a current production 70’ heavyweight coach. The board at the top is the newest AM LED version that is in some of the new heavyweights and is available for replacement use. The black LED boards have enough capacitance for 1/4 to 1/2 second power interruption.
These lighting boards are not designed to fit the Budd cars with their full interiors. It may be possible to adapt them for ceiling mounting, I have not tried that yet.
The second picture shows the LED board mounted in an AM 80’ sleeper. The outboard round holes are for 80’ cars and the inboard slotted holes are for the 70’ cars. They provide constant lighting with AC or DC conventional and with command control.
