Originally Posted by GGG:
Pete, It is 2 16 ohm resistors in parallel for a total of 8 ohms. So the resistor should be about 8 ohms. You also need to ensure that the resistor does not ground out via the chassis as this will blow the MTH circuit. Not sure which Lionel smoke unit you are using so it is prudent to ensure the smoke unit frame is not part of the engine chassis ground.
You need to ensure that any of the Lionel electronics on that board are out of the connection. The MTH circuit goes directly to the smoke resistors and the smoke fan.
John, there was a transition period when 3V started for Premier, and by 2008 all units had them. G
Good info, thank you. I have a few fan Lionel driven units plus a selection of resistors. I will make sure both leads are not connected to the chassis. I'll post pics of the electronics to make sure its 3V but I assumed the earlier boards had a different form factor.
Pete