Horn relays, like all relays, use an electromagnet to pull fourth (or repel, depending on the circuit) a series of contacts. A small voltage activates the magnet, which causes the switch assembly to move towards it and "click" the circuit closed (or open) on a much heavier current draw system. If the relay did NOT click, then check the wiring to it with a volts gauge. An easy way to test the horn is to unplug it and hook up a multimeter to the horn leads, and press the horn button. If the relay clicks and there is voltage, then it is the horn. If it does not register voltage and there is a click, then the problem is after the relay and before the horn.
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1987 Hyundai Stellar CXL 4G63
-Front Fog lamps
-6K HID Kit
-1988 Firebird spoiler
-Monte Carlo SS tip
-Ford EXP 15x6 alloys all around
-Sony Xplod deck
My other cars are Hyundai Ponys! 1987 (4G16 "Saturn" 4spd), 1986 (4G14 5spd), 1984 (4G63 5spd)
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