Well that's done. Heater fixed and about ready for its winter sleep. That's what I thought! Then after double checking everything, and lastly re attaching the steering wheel, I find the
rear screen demister wont work without the dipped lights on! 
I have no idea what's happened! Something else to look at over the winter. I have found a single brown connector behind the radio cage/heater knob area but I have no idea where it fits. All I can presume its an earth, but to what?
