security system does not chirp after horn replacement

Discussion in 'General Motoring' started by ymg200, Feb 19, 2005.

  1. ymg200

    ymg200 Guest

    hi,
    my stock 3-terminal horn died, so i bought a new one. new horn is a
    regular one and has 2-terminals. i figured out which of 3 terminals in
    horn connector are +12, and horn control button, and wired them to the
    new horn.
    the horn sounds fine, but security system does not chirp anymore when
    armed.
    does the 3rd terminal in horn connector have anything to do with
    security system?
    i assume that the apendix attached to my old horn was a relay. do i
    need to take any precautions when wiring a 2-terminal horn? do i need
    to make use of the 3rd terminal to enable security chirp? how do i do
    that?
    thanks all.
     
    ymg200, Feb 19, 2005
    #1
  2. ymg200

    blah blah Guest

    Is this a Saturn you're talking about? I cant tell.
     
    blah blah, Feb 19, 2005
    #2
  3. ymg200

    ymg200 Guest

    it's Saturn SC-2 '99.
    thank you.
     
    ymg200, Feb 19, 2005
    #3
  4. ymg200

    blah blah Guest

    From what I've seen your theory is correct. The 3rd wire appears to be
    another ground which is completed by the alarm system. Basically you
    have no alarm sound now because it has no way of grounding the horn. Now
    the question is can you tie the 2 ground wires together??? I am not
    sure, it could cause a problem or it may work just fine.
     
    blah blah, Feb 19, 2005
    #4
  5. ymg200

    ymg200 Guest

    the strangest thing is that when i connect a siren from my home alarm
    instead of horn, the siren works both as a horn, and as security chirp
    (even withought the 3rd terminal connected). however, when i replace
    the siren with the horn, there is no chirp.
    the siren has a polarity, and i thought maybe the polarity makes the
    difference. so i placed a diode in series with the horn - still no
    chirp.
     
    ymg200, Feb 20, 2005
    #5
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