If the coloured pair readings marked below are repeatable then there are semiconductors in there so you aren't going to be able to decode what they are.Thanks for the help so far.
I received a bunch of these without label and have no idea what the application was for. I did bring out the DMM and measured the resistance (Black box is the ground lead)
by Aaron Carman
by Duane Benson
by Duane Benson
by Robert Keim