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ammeter question

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  • Werner R.
    Expired
    • March 3, 2008
    • 184

    ammeter question

    my 64 has a "dead" ammeter. but, but, but, it is not really dead. if i place a
    2 volt battery across the ammeter terminals, i get a 25 "amp" deflection. reversing this reverses the deflection. so, i think the meter is ok.
    next, if i turn the key to the "on" position, but with the engine off, i get the following two voltage readings at the wires going to the meter: 12.4; 11.9. these values are approximate but close. in other words, the voltage difference is not great enough to deflect the meter.
    my question is: do any of you have readings from the two wires that enter your meter so i can compare??? i guess things are ok and the meeter jsut lacks sensitivity, but you never know. the resistance across the terminals is about 500 milliohms.
    werner
  • William C.
    NCRS Past President
    • May 31, 1975
    • 6037

    #2
    Re: ammeter question

    With a 1.5 volt battery, I get an immediate Full Scale deflection on my '65, so I would say based on your experience with a 2 V battery your gauge is malfunctioning
    Bill Clupper #618

    Comment

    • Werner R.
      Expired
      • March 3, 2008
      • 184

      #3
      Re: ammeter question

      bill
      i would have thought so too, but i have two gauges. one is a brand new rebuild. they both deflect about 25 ammps. however, i will check the battery maybe it is low]. sorry, i said two volt battery, but it is a 1.5 volt AA [sorry-not thinking]. but i still did not get a full deflection.
      werner

      Comment

      • William C.
        NCRS Past President
        • May 31, 1975
        • 6037

        #4
        Re: ammeter question

        All I can tell you is that a working unit will get a full deflection and Very Quickly!!! with a 1.5 volt battery applied. It is so quick that you won't wait to pull the battery off for fear of damaging the gauge
        Bill Clupper #618

        Comment

        • Werner R.
          Expired
          • March 3, 2008
          • 184

          #5
          Re: ammeter question

          bill
          thanks for the reply.
          werner

          Comment

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