Need Autometer Fuel Gauge Help

Discussion in 'Early CJ-5 and CJ-6 Tech' started by Renegade ll, Feb 15, 2017.

  1. Feb 15, 2017
    Renegade ll

    Renegade ll Member

    Thayne Wyoming
    Joined:
    Feb 17, 2013
    Messages:
    262
    I have upgraded my alternator to a 12SI 3 wire and also added a GM HEI ignition system. Which means I do not run a wire through a resistor. Everything gets a full 12 volts. Now what I do not understand is, I want to switch to a autometer fuel gauge under the dash. I read that a 1971 cj5 fuel sending unit is 73 - 10 ohms. So I need to get a fuel gauge with that same Ohms reading correct. Has anyone tried this and what did you need to do to make it work? I know I have a ground wire hooked up at the tank. Any help would be great.

    Thanks Julius
     
  2. Feb 15, 2017
    45es

    45es Sponsor Sponsor

    Naches, WA
    Joined:
    Mar 31, 2007
    Messages:
    358
  3. Feb 15, 2017
    47v6

    47v6 junk wrecker! Sponsor

    Washington DC.
    Joined:
    Oct 25, 2006
    Messages:
    3,715
    yeah, just make sure your sender and gauge read in the same ohms of resistance or it wont work or will burn up. I recall there being a couple different senders for my 77 cj5, so check which one you have.
     
  4. Feb 16, 2017
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

    Tantallon, Nova...
    Joined:
    Nov 22, 2003
    Messages:
    4,446
    Interesting, but has nothing to do with the fuel gauge.

    Any of these should do the trick-

    https://www.summitracing.com/int/se...cending&keyword=fuel gauge&retaillocation=int

    H.
     

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