I've bought and tested a couple dozen of these units and have yet to find one that didn't work properly. I've gotten a few with broken plastic connectors though. Even if you get one of those it's not the end of the world though. You can use a wire tie to keep the connector closed, or forget the connector and simply use spade terminals to attach the wires to the unit.
Anyway, here are a few currently on ebay. Look closely at the connector, looking for a broken tab. I think one of the Can-Am units posted has the tab broken on the light gray connector.
https://www.ebay.com/itm/255260562335
https://www.ebay.com/itm/144099053000
https://www.ebay.com/itm/165246873619
https://www.ebay.com/itm/294150036552
Anyway, here are a few currently on ebay. Look closely at the connector, looking for a broken tab. I think one of the Can-Am units posted has the tab broken on the light gray connector.
https://www.ebay.com/itm/255260562335
https://www.ebay.com/itm/144099053000
https://www.ebay.com/itm/165246873619
https://www.ebay.com/itm/294150036552