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Installing tach without instuctions

Discussion in 'The Garage' started by bigredblzr, Sep 6, 2003.

  1. bigredblzr

    bigredblzr 1/2 ton status

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    Yeah, I have a 91 K5 and it didn't come with a tach. My buddy gave me a tach, but he is a Jeep guy and on top of that moved away, so he wasn't any help on installing it. I realize that one of the wires runs to some sort of port on the distributer, but I removed my dist. cap and for some reason I couldn't find the connection. Can anybody tell me where it might be on a 91 K5? /forums/images/graemlins/confused.gif
    Thanks,
    Nate
     
  2. Shaggy

    Shaggy 3/4 ton status

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    <font color="green"> The port is usually the one marked "tach". /forums/images/graemlins/thumb.gif </font>
     
  3. TrcksR4ME

    TrcksR4ME 1/2 ton status

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    If its not marked "tach" then its the the connection that is not marked "tach" on the distributor cap. You do not have to take anything apart to connect it BTW.
     
  4. weisel

    weisel 1/2 ton status

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    It is on the dist cap. It is the only open terminal on the cap and is right beside the big (usually red) ignition wire.
     
  5. Thunder

    Thunder 3/4 ton status

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    I think these guys are talking about the old style HEI with the coil in the cap.
    Your 91 should have the the remote coil.
    Look at the coil. You will see a connector on it with 4 wires. One of the wires is white and not hooked to anything. That is the wire you connect the pickup wire (green) fron the tach to.
    Most tachs are hooked up as follows
    Red - 12V+
    Black - 12V-
    Green - coil
    yellow and sometimes White - to dash lights
     
  6. bigredblzr

    bigredblzr 1/2 ton status

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    Thank you sooo much Thunder, your reply was very helpful!
     

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