Thanks everyone. I picked the game up from another collector who had recently imported it to Australia. When you break the game down into components it is relatively simple how they work (motor,relays,etc). But when it is all combined, it is amazing what the creators came up with long before video games were thought of! I'm glad other collectors found it interesting and I will post some further details when its all running. I will also try to video the game so it can be seen in action.