How closely matched are you finding the wiring diagrams?
One possible issue is that the online workshop manuals can be marginally different to the Australian ones. Usually it's just wiring colours don't match, but pin placements in the plugs usually stay the same. Then of course in some markets there are additional connectors for additional things.
I recently discovered mine has something called a Nordic wiring harness. I still don't know what that means but I meant to go back and try and few more vins to see what other variants there might be.
It is probably time that we collectively found the answer to this problem, but I honestly thought I'd read somewhere that there was someone who had done it. Maybe it was a different model but either way it will be buried around here somewhere.
If you want to email the PDFs to me at firstname.lastname@example.org
I can post them for you later, or make images out of them for easier posting.
Also I can get you the Australian equivalent diagrams which may reveal something extra.