Tom, try your local dealer for a wiring diagram as the ones listed in Haynes/clymer manuals are for tre U.S. models with no indicators etc and the Australian model is different. Any Honda dealer will have access to this. With your caliper, check E-bay, i bought one out of the U.S brand new, pistons, seals and all from a guy in San Diego who had a heap of them for the princely sum of about 45 dollars plus postage. That was few months ago, but i couldnt imagine they would be a huge volume moving part.