NOTE THE ORIENTATIONS OF EACH PIECE. Keyed point on chamber (pointing to photo bottom) goes into right side of glove box. Electrical connector has to sit at 90 degree angle to this as shown. Piston MUST go in as shown in order to make electrical contacts work -- when you reassemble, don't make the mistake of putting the piston back in at a 180-degree angle from what you see here. The underside of that piston does not have the same slats as you see in the photo here.