I know it is a terrible picture, but it is the best one I got. It is a plug on the passenger side on the firewall just below the plastic cover for the cowl. Also it is above a wire harness, but is not attached to the harness, it is attached to the firewall of the car. so there must be wire going inside the car. Any idea what plug is used for? There is no connector hanging down, so I have to assume it is not used, but curiosity is my middle name. Many thank U's