Will have to get with my daughter for help with pics tommorow, but a quick look under the dash looks like the fresh air vent on the passengers side has a plate over it and is no way connected to my heater assy. I can feel a honeycomb pattern on the square box that sits flush with the firewall that is probably the heater coil that the hotwater tubes feed through and a blower that sits infront of it with two outlets that run up to the defroster vents in the dash. The blower assy also has a 2 position flapper for heater and or defroster. Painted black with no idetification markings. Looks really simple compaired to the other heaters that I have seen on this site. Upon further reading seems some of these had some kind of copper tubed temperature control, and guessing if mine doesn't have it, then it probably didn't come with one. Which kind of leaves you with cracking a window or opening the fresh air vent a little just to keep the temperature as comfortable as it can be.
