59 Apache FLEETSIDE tailights

[Critter]

My knowledge is 67+ trucks so I'm a little out of my element here...bear with me please.

I am trying to get a 59 Apache 3200 Fleet side back on the road. When I removed the tail lenses I see that all the "guts" are missing from the lights. Most of the front headlight connectors are gone as well. It's like someone pulled the truck apart for paint or something, changed their mind, and just put the tail light lenses and headlights back in place with no connectors. I can take care of the headlight connections, but is there a source to buy replacement FLEETSIDE tail light components? Or do I just go down to the parts house and grab a trailer light kit and get creative. Here is a pic of what I'm working with.