A relay is an open switch with a magnet attached to one of the terminals and a coil sitting nearby. When a current is run through the terminal, it makes a magnetic field, which pulls on the magnet and closes the switch. In a larger relay, this makes an audible click, which is why you hear the clicking on and off of the circuit with the signal on. Seems like your relay is working fine, best bet would be faulty signal switch.
Friday, April 30th, 2010 AT 1:49 PM