All machines that came to England after the eighties have electronic coin mechs that take four or five different coins. I'm not 100% certain - been a while since I wired one up - but I think you need 12v, 5v, the original wire that went from the coin input (technically an output I guess, depending on how you look at it) to the switch, and the original logic ground. You'll probably be able to get the required connector from Mouser or Digikey.

I recall there being an electronic mech that was the same size/shape as the standard mechanical type, but I don't think they ever really caught on since most people just replaced the coin doors - if you can't find one of those, you might have to get a coin door specifically designed for an electronic mech, as they're not the same size or mounting footprint. If you can't find one in Canada, try Europe.

(and yeah, when I first moved to the States I was shocked, SHOCKED I say, to find these guys still using the old 1970's-style mechanical coin mechs - but then, they haven't changed the design of their coins in decades, so I guess it makes sense?)