I ended up replacing the park/hand brake shoe inside the left hand rear disc as when I was running through the gears in the auto while still on the hoist, I was reaching through the window and using it to slow the spinning rear wheels and realised it was useless. I then took it for a strap to see how all my repairs had progressed and wanted to see if the diff lock worked as hoped. The XR instrument cluster does not have a diff lock light/indicator in it so I was hoping that a traction control, ABS light etc may work instead to show the diff lock engaged. No such luck but after pressing the switch it did lock the rear diff which I confirmed by taking a quick run up the hill in our street to the cul-de-sac and attempting a u turn. As these diffs are quite rare now they are almost worth more second hand than I paid for the Utes, I did a gentle six point U turn. Back on the DD I put the boot in and got the big twin rooster tails and sideways step out from a fully locked diff :yahoo:
I still need to replace some front end components to get rid of some unwanted knocking so it is back up on the hoist for the RTV. Getting close though to having it all sorted. :good: