I have the electrical diagram that is in the Operating and Maintenance Manual but I don't know what year of machine this would relate to. If you message me with an email address I will try to send a scanned copy over to you.
I had an electrical issue with my machine a few years ago and as far as I can recall the wiring is all pretty simple as will be seen in the diagram. A cheap AVO meter used for continuity testing found my fault, but you are welcome to a copy of the diagram for what it's worth.