A new video by Camp Chaos Chronicles has been posted on YouTube. It is an overview of the Delanair Mk III HVAC complete system used on the 1987 and later XJS. The system he shows and demonstrates is out of the car so you can see component location and operation.
The late facelift cars had some additional controls added to the system which are not shown, but the basic system remained identical. Well worth watching.

Jon

 

All of Camp Chaos video’s are well done and very much worth watching.