Hello MCF.

I opened my hood to take a peek at my air filter, just to preview how my CAI is going to fit. While looking around, I found his mysterious plug just chillin' out, not hooked up to anything. I compared it with the other side and couldn't find a plug that looked like the mysterious one. Pictures are posted below. The first one is a general shot of the area where the plug is. It's in the little triangular space between the headlight and the engine bay. The second picture shows the plug a little closer.

 

Sure does look important. Any of your lights not working? Did it have fog lamps at any time?

 

My fog lamp has the same plug...weird it would end up way up there?!

 

It's funny because I do have fog lights and that side is the one that works. The bulb in the passenger side is broken or burned out. My lights work, that I know of. I just can't seem to find where it goes.