Horn relay with 3 connections for Horn, Battery, Horn Button this replaces the 6 volt horn relay when converting to 12 volts.Standard horn relay with 3 connections. B= battery connectionH= horn connectionS= horn button or switch This is a ground operated relay. A connection to the S terminal that grounds will activate the H terminal when the B terminal is connected to the battery 12volt +. This relay can be used for some ground activated starting circuits, example early Fords used ground activated dash start buttons. Install the start button wire to the S terminal, the H terminal to the starter solenoid, the B terminal to the battery or key switch. Make sure to install fuse between the B terminal and the battery +12 volts. (15-20 amp fuse).
Vintage Auto Garage HR100
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