Does horn wiring have capacitor?

Discussion in 'General Maintenance/Repair Questions' started by wakeup 19, Sep 12, 2019.

  1. wakeup 19

    wakeup 19 Member

    625
    Nov 14, 2008
    (Medford)Boston Harbor to Cape Ann to Cape Cod and
    1992 300 Sundancer, Quicksilver ding w/ 6hp merc 4 stroke, anchorlift windlass, extended swim platfo
    t/ 350 merc's (carburated) alpha drives gen II
    I put a new Ongaro horn in my boat and all it does now is click but I noticed looking underneath the panel there is a capacitor that doesn’t seem to be connected to anything on one side one of 2 wires. I played around with it and got a couple of good blasts but it’s hard to get it I was wondering if on my 1992 Sundancer 30 foot does it have a capacitor in the horn or is that capacitor for something else I believe it’s a capacitor it’s a round cylinder about 1” x 3/8’s with thin wires coming out of it. If so what does it connect too. If I hold switch in too many times it will blow curcuit
    Thanks Rob
     
  2. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    2C356D3E-7536-4228-8F52-8F30B51165E5.jpeg A horn wiring uses a relay with light gauge wires that run to the switch. Then heavy power wiring from the power bus to the relay and out to the horn. The horn uses a lot of power.

    I installed an Ongaro dual trumpet on my arch. I left the oem horn in place but used a new separate relay for the Ongaro. New power wiring to the new relay and new horn. Same switch operates both relays and both horns.

    That Ongaro set is very loud.
     
    Last edited: Sep 12, 2019
    Handsome Transom likes this.
  3. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Sorry, did not answer your question. There is no capacitor. But you cannot wire the horn direct to the switch. It must get power from heavy wire and a horn relay. The relay is operated by the switch, not the horn. Here is the best simple diagram I could find:
    [​IMG]
     
  4. wakeup 19

    wakeup 19 Member

    625
    Nov 14, 2008
    (Medford)Boston Harbor to Cape Ann to Cape Cod and
    1992 300 Sundancer, Quicksilver ding w/ 6hp merc 4 stroke, anchorlift windlass, extended swim platfo
    t/ 350 merc's (carburated) alpha drives gen II
    I guess my question is I see a capacitor under dash with wire fell off one side. Does anyone no if that should be tied into curcuit. Or is it for something else. I just retired old horn to new horn. Works sporadically
     
  5. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Are you sure it is a capacitor? Is it maybe a relay? take a picture and post it here and we can try to help. Like I said in my earlier post, if your new horn is getting its power directly from your dash switch (and not via a relay) you will pop breakers and the horn probably wont be able to get enough power to sound.
     
  6. JimG

    JimG Well-Known Member SILVER Sponsor

    Nov 4, 2008
    Southern WV
    2007 310 DA
    Kohler 5ECD
    Twin 350 Mags
    Raw Water Cooled
    V-Drives
    Post a picture of it... I should be able to identify it.
     
  7. wakeup 19

    wakeup 19 Member

    625
    Nov 14, 2008
    (Medford)Boston Harbor to Cape Ann to Cape Cod and
    1992 300 Sundancer, Quicksilver ding w/ 6hp merc 4 stroke, anchorlift windlass, extended swim platfo
    t/ 350 merc's (carburated) alpha drives gen II
    Ok won’t be down till Sunday. It is cylinder shape 1” long x 3/8 diameter with thin wires coming off it
     
  8. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Whatever it is, I doubt it has anything to do with the horn. Its not a relay at that size. The relays look just like an automotive horn relay:
    Horn relay.jpg
     

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