In order to haul the trailer back and forth from the storage area, one of the first orders of business was getting the running lights and stop/turn signals working again. After 45 years, every gasket, seal and socket had turned to crumbs. All the steel parts were very rusted and corroded.
Trailer cutout showing corrosion under and around opening. The electrical system was set up for dual element 6V bulbs for separate stop and turn circuits, not at all usable with todays tow vehicles. I disconnected the old stop light circuit and installed modern single element bulbs.