I ordered a new one from AppliancePartsPros after looking up the part on the web site. It's a Maytag side by side refrigerator. The refrigerator model number is on a sticker inside on the wall at the top shelf on the left.
I watched the video on how to install - very trivial. I just used a paint scraper to pop the old one out as in the video. There are only 2 leads on the switch, unlike the 3 leads in the video, so I switched the leads from the old to the new, popped the new one in and that was that. Took maybe 10 minutes.