Hi Ian,
I wound up just soldering the wires to the frame sides on the loco, and to the center spacer on the tender. It sort of looks like water lines, and it isn't like I plan to disconnect them. Next time perhaps I will try some teeny brass tube as a socket to "plug" a phosphor bronze pin into, but for now... it picks up on all 6 axles!
Basically now I wait to get some buffers (Yet another part I forgot - no worries, I want to build a small tank engine next, so I will have to order wheels and stuff anyways) and I need to figure out how to make a teeny whistle and the sandboxes. Then, it's paint time! I shall likely carry this on in my "Let's Build a Layout" thread so we're all in one place.
My next one will be better. I see a lot of stuff I can do better next time, or that I'd do differently. I still have an engine I am quite proud of, and a 2F is at home on any midland layout ever =D
Amanda