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Wiring On A 1955 Speedometer

Discussion in 'Early CJ5 and CJ6 Tech' started by durangotang, May 8, 2020.

  1. durangotang

    durangotang Member 2022 Sponsor

    I have two of these speedometers, one has a piece attached to the back with wiring going through it to the fuel and temp gauges. Does anyone know what exactly this piece does?

    Speedos in question are the two on the left.
    speedos2.jpg

    Now on the back you can see the piece in question on the right. It connects to the bridge bar between the gas gauge and temp gauge. speedos1.jpg
     
    durangotang, May 8, 2020
    #1
  2. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Last edited: May 9, 2020
    PeteL, May 8, 2020
    #2
  3. Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Both of those should have the external voltage regulator. Note the one on the left is missing the third terminal on the fuel gauge which would indicate internal regulator.
     
    Walt Couch, May 9, 2020
    #3
  4. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Yup instrument voltage regulator used on the King Seely speedos. When willys switched to Stewart Warner speedos in mid '57 the regulator was incorporated into the gas gauge.

    New ones are found on ebay, same thing as that era Fords used. Can be replaced with a more modern 7805 regulator which has been discussed here in the past.
     
    Howard Eisenhauer, May 9, 2020
    #4
  5. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    I learn more every day on this site.
     
    PeteL, May 9, 2020
    #5
  6. durangotang

    durangotang Member 2022 Sponsor

    Awesome, thank you.
     
    durangotang, May 9, 2020
    #6