Did you also buy the "chuff generator"? If so the the directions show how to install both units. If not you still need something to generate the chuff if you desire 4 chuffs. The existing switch can be used but will still only give two chuffs. 

Pete

Yes indeed I did purchase!  

You should have everything you need for 4 chuffs and 4 puffs. Now you just have to sort out the wiring. First time will take a while. Hopefully you have a fine tip soldering iron.

Pete

Do you know of any resources that exist to show the wiring diagrams on the Niagara?  

No diagrams, but it's a pretty standard steamer of the era.  It doesn't have the troublesome smoke regulator, so I simple tune-up of the smoke unit usually gets you nice smoke.

• New wick.
• 20 ohm resistor
• Fan intake drilled to 1/4"
• Stack reamed out as much as possible.

Those are the basic steps I take to get good smoke.  I use the Lionel braided wick shredded and stuffed into the smoke reservoir.  Make sure there's a good path of airflow from the fan chamber across the resistor (embedded but not covered in the wick), and on to the stack.

The first diagram in this Lionel document looks to be pretty close to what you'd find in that Niagara.

Lionel TMCC Representative Locomotive Schematics.pdf

Hi John,  what do you use to shred the wick?   Do you just pull it apart?

What does it look like when you install it?

I just pull it apart, Mike Reagan when he was at Lionel made a good video on most of these techniques.

that is pretty amazing.  Thank you