Identify This Plug(USDM ST) Options

[Coomer]

So I've got this extra plug from my modified harness sitting in my engine bay, and I'm curious as to what it's for. Here's the plug:







Now, my car is five-speed '94 USDM Celica ST. The car had A/C from the factory. Any ideas as to what this plug is for?

Attached image(s)

 

[Batman722]

OK I took some pics. I didn't resize them so you can see them better.

the bad news is I didn't find the exact plug but I did find one very very similar. It was the only one with ONE wire to it in that area. ( blue wire )

first the area


pics of plug



pic of it plugged in (dead center )


it is probably a coolant temp sensor. It is plugged in right next to the lower radiator hose ( thermostat housing I think )

it was the only one that was on that side of the bay with one wire that I could find. I would assume the 94-95 are the exact same but maybe not. Maybe I am looking in the wrong area ?

hope that helps. I will check again tomorrow morn when it is light out.