where to buy a light socket

Dixie Dart said
universal mopar ones do not work look at the back of a taillight housing from a 71 dart

Can't look at one without a picture. No 71 Dart here.
I dont know what universal mopar is either. I know aftermarket bulb sockets can be used in most any fixture
You might need to peel the original socket out of a pot metal housing. Good luck