info on cleaning corroded bulb sockets, please!

Replace them. They are cheap as hell and you can never get all the corrosion out, so it will return pretty quickly.

This would actually be my preference, but they are swaged into the housing - no obvious way to remove them or to replicate the process of putting new ones in place. Since 70 Dart taillights are in a housing hung in the bumper, the whole socket is exposed to the weather on the outside and has to be completely water tight. If there is a process here that I am unaware of please school me