Thanks half cab, I missed that post. My bronco is a 70 but dont know if its early or late 70, I wonder if some early 70 broncos got vacuum wipers? Gonna have to go measure my wiper holes and see if the frame was electric or vacuum, I think it is the original windshield frame.
Back on topic, I think I am going to make some metal covers for the holes in back and just screw it on to cover them up. Or maybe find some LED lighting that will fit in the holes and wire it up for lighting in the back of the bronco