Anyone good a chopping the road stuff off of them but still leaving them able to function for the track?
Check out Motogadget m-unit simplified wiring diagrams. Gives you an idea of what you need and how simple it would be to wire everything up. The m-unit itself is more than you need if you only need a start button and power to oil / neutral lights and a dash, but is a no brainer for a road loom as it only costs £200. You can view the simplified wiring diagram on the downloads page to get an idea of how it all works.