@gunrunnerjohn posted:The smoke regulator is to allow three levels of command selectable smoke volume. As the previous post suggests, the smoke unit should have any 6 ohm resistor replaced with the 8 ohm resistor. As for the exact part number, it really helps if you provide the exact Lionel product number.
I just replaced the 6 ohm resistor with a 8 ohm on my early Legacy FEF. While I loved the smoke output, in the long run I'd rather have a happy regulator. It's doing alright with a 8 ohm.