schnitzelboy

I've replaced the heater core and now that I have the dash back in, I can't figure out where this last connector goes. It's a tan connector with a pink insert and one black wire. The frustrating thing is that there's another just like it with six wires coming out of it and the two plugs are interchangeable. I assume that the one with more wires corresponds to some option that not all of the cars have and the one with a single wire is for cars without that option, and I also assume that one of them just hangs loose in the footwell, but I don't know which one corresponds with my car. The only code I get is that the dash thermostat isn't working properly, and I'm not sure whether that's connected. Any help on this is greatly appreciated.