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Thread: Pinout on Speedometer

  1. #1
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    Default Pinout on Speedometer

    Does anyone know the pinout for the 8 pin plug that goes into the speedo?
    My manual shows a lot of stuff but that isn't documented. I expect it will be the same on all M-12 and M-400 cars.

    What is the minimum switching voltage needed for the Speedo to measure. I good strong pulse from the speed sensor. I expect anything between 5V and 12 V should be enough ....but it would be nice to know for sure. My speedo seems to be dead.

    Thanks,
    Gregg
    M12-3R 2003 #005

  2. #2
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    Gregg,
    What did you find? I would be curious how all the gauges are wired and couldn't find any thing in the assembly manual either. The speedo gauge is a Caerbont Automotive Instruments part. I suspect the others are too. They are located in Wales, UK. Google for details or

    https://www.caigauge.com/

    There is a contact us link on their page.
    Last edited by esrandl; 10-29-2018 at 06:21 AM.

  3. #3
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    They actually have a little write up on Noble gauges on their site. Looks like they are doing the M600 guages too.

    https://www.caigauge.com/noble
    Last edited by esrandl; 10-29-2018 at 06:20 AM. Reason: typo

  4. #4
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    every time i have had a speedo issue on a car it has been at the wheel sensor or the connect under the dash were the wheel sensor is connected

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