@gunrunnerjohn posted:It's "custom" to that locomotive, I'm sure that Alex uses either Lionel or MTH smoke units for such upgrades. I use a lot of MTH smoke units in upgrades, thought that may change if I can no longer get them.
Yes exactly what John said above. I used a newer style Lionel 1 by 1 16 ohm smoke unit, which is then customized with the proper size resistor and wiring.
Alex