and the connectors are not available here in Australia
Russell those 1/4 " female spade connectors are avaiable all over the world. Maybe you didn't search for them by their proper name?
Anyway the wiring for your machine is not as complex as you may think, and ordering a harness from overseas may take quite a while. Just study where these wires go and you can do it all by yourself with just new power cord, some new wire, ring terminals and a common terminal block. Pic enclosed.
I just happened to be working on a compressor for a Pepsi VMC 81 today and took some before and after pictures to share, hope this gives you some confidence.