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Wiring Up A Horn

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  • Wiring Up A Horn

    Can anyone help me with a wiring diagram for installing a horn for my boat.I have installed a fuse block and my other electronics to it except my horn which I am not sure of.What kind of switch should I use and how should I wire up the horn with this switch from the fuse block.

  • #2
    Re: Wiring Up A Horn

    You would wire it the same way except you would use a momentary switch. Use the appropriate size wire and fuse as per the horn and you should be good to go.


    • #3
      Re: Wiring Up A Horn

      Henry,You may also need a horn relay. Pick up a generic at the local auto parts store. That relay will prevent arcing and burning in the switch due to the high amps that horns draw. Run a hot lead to the relay load side, then from the relay horn side to the horn. The other terminal run to the switch, then switch to ground. They are usually labeled L(load) S(switch) and H(horn) on the relay. Without a relay, the quick little beep-beep's will burn the switch. The relay pictured in the link is usually available for 3 to 7 dollars at the parts store.http://<a href="http://users.clarkst...a><br /><br />
      sigpic 1985 Bayliner 1600 Capri Cuddy, 1965 MFG Niagara Custom. >> MFG Video<<. >> MFG Project<< >>Bayliner Hard Top Project<< >>Bayliner Repower Project<<


      • #4
        Re: Wiring Up A Horn

        If you use the relay that Mark stated, you should have no problem. If you use another type of relay, make sure the contact ratings are at least 10 amps. The same thing can be accomplished if you use a horn button wired directly to the horn. This is because the contacts on the button are rated to take the current.
        2005 Stratos 191 FS 150HP Yamaha