@RickO posted:If it helps. There are spade connector terminals underneath each piece of Fastrack.
I actually looked under the track last time I was at their house and took a picture. It looked like this:
Given that his parents don't like to mess with stuff and they live in an apartment in Queens plugging the barrel connector into it from the conventional transformer makes the most sense. The boy is five. I actually made them a better power supply for the wireless 0-8-0 that came with the set using a Dell laptop power supply that I had. The barrel connector fit, but I didn't measure the size of it.
John