94 YJ with a/c.
The normal heater control is off, defrost, floor and vent
. The fan runs on defrost and floor but not on vent. Also when you push it to vent you can here a micro switch that I beleave is turning the fan off. There doesn't seem to be any vents for the main heater control next to the radio.
The vents under the dash only work with the a/c fan control. Is this correct. If so why do I have a vent control on the main heater control. The only thing I can think of is this is an after market a/c or that's the way jeep setup for a/c.
Here's a picture of my setup. Looks stock to me. You can click the picture for a larger view.
The controls for the vents are right under the ash tray and work correctly. Left is fan, right is rheostat for the compressor.