Mine are the same as the picture RoyB posted. As I do modifications or repairs I am replacing mine with conventional screw type outlets. I dont like those IDC (Insulation Displacement Connectors) for high current loads (hair driers, curling irons, heaters, etc.) Too small of contact area with the wire. With the vibrations caused from going down the road, the spring loaded connection will loosen. Then you will have a voltage drop and/or arcing which will lead to heating, oxidizing, and more arcing, melting of the insulators and the fixture, and possible fire.