1988 328 HORN | FerrariChat

1988 328 HORN

Discussion in 'Technical Q&A' started by GIANNI13, Feb 18, 2018.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. GIANNI13

    GIANNI13 Rookie

    Feb 8, 2018
    14
    PITTSBURGH PA
    Full Name:
    JOHN W CAMP SR.
    #1 GIANNI13, Feb 18, 2018
    JUST BOUGHT A1988 328 HORN WAS NOT WORKING..FOUND THE HORN WAS UNPLUGGED AT THE COMPRESSOR PLUGGED IT IN AND IT WORKED WITH THE BUTTON PROPERLY... WENT TO MOVE THE CAR WHEN TURNING THE STEERING WHEEL THE HORN BLOWS NOW THE HORN BUTTON DOESNT WORK BUT HORN BLOWS WHEN MOVING THE STEERING WHEEL!!!! EASY FIX??? SUGGESTIONS.. THANK YOU GIANNI
     
  2. Ferrari Tech

    Ferrari Tech Formula 3

    Mar 5, 2010
    1,126
    Georgia
    Full Name:
    Wade Williams
    #2 Ferrari Tech, Feb 19, 2018
    I guess we know now why the horn was unplugged. Pull the cap off the wheel and inspect the wire in the hub. It is touching metal somewhere. It may need to have the hub removed to get to the issue. It has a ring nut, (read as special socket) that has to be removed and you may need a puller to get the hub to come off.
     
  3. GIANNI13

    GIANNI13 Rookie

    Feb 8, 2018
    14
    PITTSBURGH PA
    Full Name:
    JOHN W CAMP SR.
    #3 GIANNI13, Feb 19, 2018
    Pulled the wheel off. Wire has broken off from the ring. Have to take it somewhere to get that nut off and reattach thank u for the feed back is the wire going to the button hot. Or ground?
     
  4. ago car nut

    ago car nut F1 Veteran
    Silver Subscribed

    Aug 29, 2008
    5,265
    Madison Ohio
    Full Name:
    David A.
    #4 ago car nut, Feb 19, 2018
    I believe the when the button makes contact it is to ground, Well that is the way it works on most cars.
     
  5. DGS

    DGS Six Time F1 World Champ
    Rossa Subscribed

    May 27, 2003
    60,508
    MidTN
    Full Name:
    DGS
    #5 DGS, Feb 19, 2018
    Just checked the '88-'89 328 wiring diagram.

    The horn switch grounds the violet-with-black-stripe (ZN) wire, to activate the coil of relay "h".
    The wire is "hot" through the relay coil. Grounding it to chassis operates the horn.
    When the relay is activated by the horn button, the relay contacts provide power to the horn compressor.
    Both the relay coil and power to the compressor are driven from fuse 8.
     

Share This Page