If you’ve purchased a key kit from us, you’ll start with the key, a rubber spring, and a hinge.
First, hook the top of the hinge onto the top two metal brackets in the space on the keyboard. Then push down on the bottom of the hinge until it snaps into place.
If your rubber spring is missing, you can set it in the center and the key will hold it in place. Set the key in place and push down to snap it on.