If you get the complete assembly be advised that the wires may be backwards. Seems to happen a lot.
We've called the manufacturer, but they seem to think it's not an issue with their stuff.
So we remove each and every one from the box and reverse the contacts in the sockets. Then we test each one by plugging it into Johnny's Bronco and turn the running lights and turn signals on.
We don't sell the socket alone Doug, but you can purchase that individual piece from any well stocked local auto parts store.
It's then up to you to de-solder, remove, then replace and re-solder the new one in place.
Not worth it in my opinion, but definitely cheaper.
Paul