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Speedometer replace/repair

Discussion in 'Early CJ5 and CJ6 Tech' started by peter, Nov 12, 2010.

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  1. Jan 26, 2012
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
    Joined:
    Mar 29, 2007
    Messages:
    5,923
    Connect a 12V battery + to the I (ignition) terminal on the fuel gauge and the battery - to the speedo housing. Connect a wire to the "S" terminal on the temp gauge and temporarily touch the other end of this wire to speedo case (ground). Watch the temp gauge slowly pulse over to hot. If the gauge only goes half way then it's 24V. You can also test the fuel gauge as well. Wire from "S" terminal on fuel gauge to ground should move needle to full. Don't hold the s wire to ground very long, only to see it move to full scale.
     
    Walt Couch, Jan 26, 2012
    #21
  2. Jan 26, 2012
    trent9

    trent9 Banned

    SC, beach
    Joined:
    Jan 25, 2012
    Messages:
    13
    Most automotive gauges work at 6V, not even 12V.
     
    trent9, Jan 26, 2012
    #22
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