Found it! It's in position #3 on the diagram below, which as you say, is behind glovebox.
****EDIT****: My bad: it's actually in the engine bay, not in glovebox
God knows why we need special wiring in Australia, different to the rest of the world, for cigarette lighters? Kangaroo avoidance circuitry? Ok, that would need to be unique for Australia; but cigarette lighters?
Thanks guys..