Compact Air Horn with Compressor 12v (Includes Relay)

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12v 150db Air Horn for use in Car, Van, Tractor..... Each air horn comes with its own air compressor neatly attached to the side making it so compact you can put it anywhere. Must be installed/wired using a 4 pin relay. You will not get the maximum performance from the horn without using a relay. You may also cause damage to vehicles original wiring system by not using a relay. Requires 12v Power Show more