Our Kenmore dryer is VERY old. We thought we might have to replace it due to parts availability. At a minimum, we figured we would have to wait for an appliance repair person then wait for the part then pay a hefty bill. As I did some research, it looked like something my handy husband could handle. The first part we ordered was for a newer model dryer and didn't work. As I further researched parts, I came across ApplianceParts Pros.com. I found the right part. And we loved the video explaining how to install it. The old part had 2 posts and the new part had 3. The video explained what the third post was for and how to install the part both using and not using the third post. Having watched the video, replacing the dryer door switch was an easy repair. Thanks, loads!