I got registered OK without heater. I have the demister vents but only coz I like the flashy chrome thingys. The Engineer knew I didn't have it hooked up but he didn't seem to worry. I think that if you have a soft top then you must have demisters. I didn't so it can't fog up presumably.
Hey TC (reminds me of a cartoon

), I am going tonight so if you have the info on the heater/control then I'd be most interested.
Was playing with cutouts of gauges and switches last night blutac'ing them to my blank dash. Discovered like you guys that a heater control doesn't exactly fit in so may go with the underdash option. I reckon this is the best bit about having a kit - the opportunity to customise. As they say....every Cobra is an original !
Cheers,
Adrian.