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C2 Gages

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  • Dave M.
    Infrequent User
    • March 1, 1985
    • 1
    #1

    C2 Gages

    Anybody know how to test my 1965 Gas gage and my water temp gage? Dash is out of my car which makes it easy to access.
    Tags: c2 gage questions
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    • Stephen L.
      Extremely Frequent Poster
      • May 31, 1984
      • 3148
      #2
      Re: C2 Gages

      Connect a decade box (resistor source) in place of the sensors and vary the resistance to observe the meter deflections.
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        • Mark H.
          Very Frequent User
          • July 31, 1998
          • 384
          #3
          Re: C2 Gages

          These articles go into all the fuel gauge details. Available in the restoration documents sticky.

          https://www.forums.ncrs.org/attachme...5&d=1499375299

          https://www.forums.ncrs.org/attachme...7&d=1499375217

          Mark
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            • Frank D.
              Expired
              • December 27, 2007
              • 2703
              #4
              Re: C2 Gages

              Originally posted by Stephen Lavigne (7553)
              Connect a decade box (resistor source) in place of the sensors and vary the resistance to observe the meter deflections.
              Unlike C1 and C3 fuel gauges, the C2 uses a voltage divider (e.g. a powered sending unit) and so a "complete" test requires a potentiometer hopefully the articles cited above use the correct method (I haven't read them yet)

              https://youtu.be/fNmmvhs6dMU


              The video also shows how a gauge with missing or deteriorated dampening material acts .
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