It's a separate cable bolted to the bonnet with the other end slipping over a bolt on the support brace across the front of the top of the radiator.
I can't take a pic of mine. It's somewhere on the highway in the middle of Australia, lost a few years ago. I would absolutely love to use this as an excuse to go back there now and look for it, but alas it's probably gone.
On the positive side, though - my bonnet has never shaken itself loose.