Installed 3G alt and now gas gauge is having issues

Discussion in 'General Maverick/Comet' started by mrmalina99, Aug 26, 2015.

  1. mrmalina99

    mrmalina99 Member

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    How would you adjust it? Is there a screw? Also RadioShack does not exist anymore.
     
  2. mav man

    mav man Member

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    Radio shack is still around.
     
  3. mrmalina99

    mrmalina99 Member

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  4. gregmaverick

    gregmaverick Member

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  5. mav man

    mav man Member

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    We still have 2 radio shacks here in central wi
     
  6. mrmalina99

    mrmalina99 Member

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    Looks like there are some stores about an hour away.
     
  7. mrmalina99

    mrmalina99 Member

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  8. mrmalina99

    mrmalina99 Member

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    Got the Radioshack rheostat today. Anyone got instructions or info on this process?
     
  9. gregmaverick

    gregmaverick Member

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    See Schematic.
    On the Radio Shack variable resistor, connect the center post to one of the outside posts.
    Connect your "fixed value" resistor to one of the outside posts.
    Wire this assembly in "series" with the sending unit wire. (Either near the tank, or at/near your gauge).
    Adjust variable resistor to reflect the amount of fuel in your tank. Hopefully, the fixed value resistor will be "in the ballpark". As other members have pointed out, you may or may not have to add or take away from the fixed value.
    Ideally (perfect world), the variable resistor will be at mid-point when perfectly adjusted. But, once you've got the gauge set where you want it, you could remove from the circuit, measure the total resistance, and then replace with a fixed value resistor with the measured resistance. :tiphat:
     

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  10. gregmaverick

    gregmaverick Member

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    Opps...On the schematic, the Fixed Value Resistor should read 20 - 40 ohms. :slap:
     

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