Hotwire harness-how to get around the 12v at start

This is our Australian Valiant ignition switches. Is this similar to what your's looks like?



I have no wiring in the car and am running a painless universal kit so I need to work out what to wire where. I think I'll use the button since I've already bought it, but I just need to wire it so it will operate with the key in the run position only.