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  • 89 YJ Temp Gauge

    Cant get my Temp. Gauge to work on my 1989 Wrangler. Checked fuses, changed sending unit. Could it be anything else before I order a gauge and or the circuit board?
    Thanks

  • #2
    I would trace the wiring from the sending unit back to the gauge to see if there is a problem there first.

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    • #3
      if I'm not mistaken there should be about 12vdc on the wire going to the sending unit if you disconnect it and measure from the wire to ground {-}
      the sending unit varies the resistance based on the coolant temp.
      or spend $20 and put a mechanical meter in.

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