Yes, I think you're right about the HVAC, seems like I've got my terminology a little mixed. The piccy below shows how to remove the HVAC unit - I'll tackle that one too in the great bulb replacement mission - I've decided to replace all bulbs everywhere
I also found similar on alldata re the ACC control panel and for my '93 it suggests you can remove the unit by pushing it outwards from behind without removal of the wood trim. This seems to make some sense as upon closer inspect the unit 'looks' physically smaller than the console aperture.
Trouble is I now need to locate my radio removal tool!
Cheers
Lea