Sensor Plug Under Air Box?

[knever3]

I have an empty plug under the air box on my '87 Comanche.  It's a 2 pin just like the MAT sensor MALE with a green waterproof rubber grommet.  Does anyone know what this is supposed to plug into?

 

Photobucket is not working for me today, neither is Picasa :fs1:

  It looks like this except with two pins.  I thought I knew at one time but now I forgot.

 

[onlyinajeep726]

It plugs into the temperature switch in the radiator that turns on the electric fan when the coolant gets too hot.

 

It plugs into this thing:

 

The above fan switch screws into this opening:

[mvusse]

That explains why I have that plug as well. My truck came without an auxiliary fan from the factory, I have since added one with a home made controller run off a sensor in a HO thermostat housing.

[knever3]

It seems I already have that pluged into something??  I will look when I get home I guess. 

[knever3]

So this would not affect anything if it was not plugged in?  I don't have an electric fan yet.

[onlyinajeep726]

No, it won't affect a thing.

[HOrnbrod]

Plug like this?

 

[onlyinajeep726]

Edit, I misread Don's post... nevermind.