Putting your switch in will be easier. The best I could find in Australia was the switch from the LS/LT Focus Cabrio. The LS Ghia had auto climate control and might have had auto wipers as well. I think for some reason they took some features away on the LT other than the Cabrio.
Also, when it comes time to mount the sensor we'll probably need a rain sensor pad to glue it on with. I imagine there's somewhere local that would supply them, but this is the best I could find on short notice:
https://www.ebay.com.au/itm/FORD-C-M...kAAOSwcapb8-5v
Luke