First, Find and Watch the Video for YOUR unit!! The Ice Maker unit (#17) came as a kit, all you would need despite which production variation you had, the original was an enclosed black 'front box' with the Hall Sensor secured with a screw, the replacement an exposed 'notched gear' front, the Hall Sensor just pushes on, no screw. The replacement unit necessitated a wiring harness change. Not really a problem due to the excellent design of the wiring harness as each connection only went one place. The task is not difficult, Just Patience and Thought is Required. Otherwise, Stop and Look First!! Three difficulties were encountered, 1) the ground terminal on the auger motor base, it is tight, use care, 2) the Ground Terminal Screw, remove the Auger Motor three mount screws which will permit the motor to be lifted and underneath access for a long shank, flat blade screwdriver. Don't Forget to install the three mount screws!!, 3) the Purple Wire Fuse (black plastic) attaching to a clip on the ice cube form, no matter how I positioned the fuse, the ice cube form would not seat, I finally removed the clip, now the fuse just sits with the wiring harness, and the ice cube form then fit as it should with the three screws holes aligning: to the white plastic air vent, the difference about 1/16". Make sure the ice cube form three screws are fully seated as you are cutting new threads, check two-three times checking for movement between the Ice cube form and the white plastic air vent base.