Please see the pictures added here, know that rear pictures of this area of the truck are rare. I believe your '52 should use the taillight that was used for the other models. It makes little sense for a cost conscious manufacturer to carry any more lights than necessary.
1949 examples:
https://www.flickr.com/photos/advance-design_parts_co/8325779957/in/album-72157632386552074/
https://www.flickr.com/photos/advance-design_parts_co/8326840990/in/album-72157632386552074/