Just replaced the timing belt. Went fine until reinstalling carrier. I have one sensor plug that I cannot find a place to plug in. It is in the bundle with the air temp, coolant temp, electric fan power. Two wires going to it, semi-circle shaped. Identical to coolant temp in lower radiator hose, except two wires.

 

A real shot in the dark....could it be the temperature sensor for the A/C condenser? (plugs in on the upper-left side of the condenser).