If you’ve purchased a key kit from us, you’ll start with a key, a rubber spring, and a hinge. You’re going to hook the bottom of the hinge onto the two metal loops at the bottom of the space. Then push down on the top of the hinge until it snaps on. Set the rubber spring in the center, and then put the key in its space. Push down to snap it on.
The colors in the video may differ for your model, or the hinge may be rotated from what you see in this video. That’s fine, what matters most is the shape of the hinge piece.