My new Sammy Computer/Coin-Operated Pachinko

[Bigdog]

UPDATE:

When I plug the machine in, the circuit board sometimes gives off a buzzing sound...like there is a bad connection. So, I unscrewed the cover for the circuit board to take some pictures for Card Shark, and when I did, it somehow activated the see-saw...now the see-saw works as it should...flips 3 times upon reset.

Besides the missing pieces, mechanically, my only problem now seems to be "winner activation", which is the white arm which goes in between the blue sensor. I have never gotten that part to work, although the circuit board did "buzz" when I put the white arm through the blue opening. Any thoughts?

[Card Shark]

I got home late tonight but will try to test a few things on my machine to come up with some ideas.

[Bigdog]

On this machine, I've got an important wire that is currently unattached and too short to attach to the circuit board. In an effort to solder a replacement wire, what "guage" wire should I use? I am a complete moron when it comes to electricity, but I assume that the wire type is similar to/same as most vintages? I appreciate all comments.

[Card Shark]

I believe 20ga wire should work well.