I did a search but didn't find much. My heater/AC controls don't work right. I tried to trouble shoot it last night, but no matter what I do, the air only blows out the bottom "heater" vent. I did find a small vaccum line (approx. 1/8" dia.) that runs through the firewall into the engine compartment, but then it is not hooked up to anything. I tried plugging it, but that didn't work. I connected it to the vaccum ball onthe firewall, and that didn't work either. Is it supposed to be connected to the carburator or a vaccum tree off the intake manifold or soemthing along those lines? I tried looking it up in my crappy Haynes manual, but the section it refered me to was a blank page! /forums/images/graemlins/angryfire.gif Also, there were no vaccum line diagrams or ANY useful pictures /forums/images/graemlins/angryfire.gif /forums/images/graemlins/angryfire.gif I would appreciate any help I can get on this.