As the title states, i need to know what this is. i found it behind my grille today while doing some cleaning under the hood.

Thanks ahead of time!

 

As a guess it looks like a plug for a fog light.

 

Can't see the wire colors but I'll guess black/white & light green/black? Ambient air temp sensor connector.

 

I have the same plug that is connected to nothing as well. lol

 

That would be my suspicion, too.

 

LOL me too. just too damn lazy to ever snap a pic of it.
Hope you find out, because I would like (to steal) that knowledge...

Wouldn't that ambient air temp sensor be that little nipple visible in the left opening of the center support in front of the radiator?

 

do you have, in the cab of the blazer? A digital display of a compass and outside temp? You should kuz that is exactly what that connector goes to ^^and yes that it the black nipple thing on the radiator support

 

yes i do have the digital display and it works perfectly, thats plugged in, this is seperate. i will check colors tomorrow, but i looks alot like he plug to the horn, but i have that too haha

 

Ok..... It's the right shape, right colors (without stripes) but I figured he would've also asked why his temp display read "SC" instead of a temperature if that was it. Maybe you can plug a light-up Santa into it and hang it on your grille?

 

where does one get a 4 plug light up santa these days?