I have just read Marvin Gaddy's 3/26/00 note about GE relay-switched lighting controls. His answer is right on. I too have a 1950s house with such a system. I need a few RR-5 relays to use as replacements, and they are no longer manufactured. The RR-7 relays now used will not fit into the double-rail boxes which hold the RR-5 relays. Can you help me to find a source of used but good RR-5 relays?