I just changed the heater core in my 1999 Subaru Legacy Outback. I had to take the dash out, and disconnect many connectors. After putting it all back together, my heat now works (yay!), but my AC no longer does.
Note that the AC worked (very) well before changing the heater core. I'm inclined to think that I missed a connector somewhere, but looked for hours and couldn't find anything. I checked the pressure on the AC system, just for good measure, and it's fine. The AC on/off switch inside the car lights up, but the system doesn't turn on. (The fans do work just fine though.)
Any idea what it could be, or where my missing connector might've been?