I found it interesting that the relays are labeled "Made in the USA" yet they shipped from China. Maybe that's the island of USA and not the United States of America? They do not look new; they have a lot of scuff marks on them and look like they may have been previously installed. They are labeled "FoMoCo". All of this make me suspicious.
I've installed one. It's difficult to tell if it's working as it is on the heated mirror circuit and it's summer at this writing.
So, the jury is still out on this one.