I engineer things a little more advanced than this at work all day, this really wasn't difficult at all. If I knew more about electrical I would already have this fully-functioning, video clip posted and putting kits together for retail. I had to put the project on hold while I made a few other mods to the truck. Speaking of that, for you Aussies that own a gas-powered Disco, I advise that you convert the factory cooling system to the inline-thermostat type which a lot of us on LRF.com have done. Its a substantial improvement. I also added the factory engine oil cooler to my 2003. 03-04 MY were not sold with the cooler so that's another one that we are trying to make the community more aware of. Anyway, back to TransXCase! I will update you guys when I have installed the limiting switches, as it will be legit at that point.