Hi, Phil:
OK! So, If I buy the one on ebay, it will fit my machine and work, just with incorrect pays. Right?
The 2 images you posted are giving me trouble. When I download them, I get told that they have incorrect file extensions. I converted them but the results are very low res, and I can't work with them. Could you maybe email them to me?
What replies I'm getting from suppliers pretty much amount to "good luck". Monti's is apparently out of business.
the one currently on ebay will probably work. At this point you mostly care about it physically sliding into the cabinet and the plug mating correctly to the socket.
some rewiring is likely needed on the hopper plug ... on the hopper itself, not the socket in the cabinet. However, a bit of verification of the wiring on the socket would be good to see how close to the 815-1 the wire colors are and get the wire colors of any different wires to compare to other schematics of the same era. Bally generally kept the wire colors consistent between different models, but there are plenty of exceptions to bite ya.
fortunately, most circuits going down to the hopper are either 50V or 120V, so as long as those two don't get cross-wired, you won't blow up anything worse than a fuse if the wiring is wrong.
I'll email you the files, but you should be able to click on the attached images, then right-click and save-as to get the originals downloaded.