Schematic for Automatic Heat system?

[markmalin]

Hi,

I've searched through the archives and see a few block diagrams, but I'm looking for an actual schematic of the Automatic heat control system for my 85 Carrera. I need to know more about how the entire system works (especially the interior cabin temp sensor and the sensor at the left flapper valve below the car).

If one is posted, please feel free to point me in the right direction. Otherwise, if someone has a copy I would truly appreciate it!

Thanks
Mark.