I've been searching the web for info on the Z400 diesel and a wiring diagram but info is sparse to say the least (G3200). I did see one site that indicates Kubota does not allow it's dealers to sell parts via the internet. Whut up wit dat? There's no way to even look up maintenance items like filters. You'd think that the market would be chomping at the bit to have parts sent to their door. I can't even find manuals! Is this some kind of National Security requirement that you have to show your face in a dealership?