Dallas Joseph posted:... Actually I was wondering what would be the best way to do two red markers and some low light insideof all these cabooses using LEDs ...
Not clear if the issue of red LED markers was resolved. If not, refer to this OGR thread which shows how to add 2 Red LEDs to a 12V white LED strip. Following photo hijacked from earlier thread. But you may need to save up your pennies as it will cost about 5 cents per car! 
