I working with a SPST relay (Radio Shack Part Number 275-232) and I can't seem to figure it out. I've looked at the wiring diagram but it didn't help me much. Reguardless of what connections I make COM always seems to be connected to N.O. Perhaps someone could just tell me exactly what connections I should make if I'd just like to test out the relay using a 9v battery and an LED. Any help is appreciated.