I'm convinced it doesn't go with the refrigerator too.
I did find out why the ice maker wasn't working. It's my fault. When I hooked up the water line, I didn't see the cap on the inlet so, when I saw the water line attached to the back of the frig went into an opening in the bottom, I pulled it a little to see if it popped out for connection. It didn't. Then I found the connection under the cap. So today I pulled the frig out and took off the bottom panel. Sure enough! I pulled the line enough so it kinked the water line that came with the fridge at the connector. The funny thing is that once I got that fixed, it's still not making ice but I'm going to give it some time. I thought it would start filling up the ice slots immediately but it didn't. I'll just give it some time and check later.
Thanks for your help, everyone. You confirmed what I suspected. I'm sure the installers dropped that. It probably fell from a shirt pocket or something when they were bending over plugging in the juice. In fact, it was near the wall outlet.