Was screwing around in my car and took off the panel underneath the dash(on the tranny hump) and found a stray plug. Any one know what it is?

 

Might be for the Optional OEM underdash lighting? Not sure.. just a thought..

 

That is for the fog lights. It plugs into the switch which would be located underneath the A/C controls. If you were to add-on USA fogs, thats what you would use. JDM fogs use a completely separate wiring harness and switch.