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tach wiring help

Discussion in 'The Hokey Ass Message Board' started by greenracer, Dec 6, 2009.

  1. greenracer
    Joined: May 7, 2006
    Posts: 49

    greenracer
    Member
    from sequim wa

    have a WICo tach with 3 wires and cannot figure it out 1 is the light where do the others go??? I am trying to hook it up to 289 motor there are two terminals on the the back of the tach one is marked "positive" the other one has no markings an the third goes to the light
     

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    Last edited: Dec 6, 2009
  2. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

    one is a ground the other goes to coil.
     
  3. greenracer
    Joined: May 7, 2006
    Posts: 49

    greenracer
    Member
    from sequim wa

    tried the coil
     
  4. hotrod-Linkin
    Joined: Feb 7, 2007
    Posts: 3,382

    hotrod-Linkin
    Member

    well.then .i don't know what to say.
     

  5. nico32
    Joined: Oct 30, 2008
    Posts: 717

    nico32
    Member
    from fdl, wi

    What's it out of, could it be that it came out of a positively grounded vehicle?
     
  6. richie rebel
    Joined: Oct 8, 2007
    Posts: 1,184

    richie rebel
    Member

    or the tach needs a sending,or the tach doesn't work at all
     
  7. nico32
    Joined: Oct 30, 2008
    Posts: 717

    nico32
    Member
    from fdl, wi

    That was my next thought
     
  8. squirrel
    Joined: Sep 23, 2004
    Posts: 49,864

    squirrel
    Member

    which side of the coil did you connect it to? hopefully the (-) side that connects to the distributor...not the (+) side which connects to the ignition switch
     
  9. carkiller
    Joined: Jun 12, 2002
    Posts: 849

    carkiller
    Member

    Pull the cover off, term are probably marked. Most tachs require a hot and a coil side. More tachs get destroyed because people dont look at the back of them.
     
  10. duste01
    Joined: Nov 5, 2006
    Posts: 1,213

    duste01
    Member

    did that tach come off a tractor by chance?
     
  11. duste01
    Joined: Nov 5, 2006
    Posts: 1,213

    duste01
    Member

  12. duste01
    Joined: Nov 5, 2006
    Posts: 1,213

    duste01
    Member

    you need a transmitter.
     

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