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  1. #1
    Kirk1964's Avatar
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    Speedo 05 GTX SC 185HP

    Need help on solving a speedo problem. I have already replaced the sensor wheel assembly on the back of the ski. It looks like the 3 wires (Black/orange, purple/yellow, paige/orange) go to the fuse panel (am I wrong?) All the functions (modes) work on the cluster panel except the digital mph plus the mechanical needle speedo. Any help would be appreciated. Thanks


  2. #2
    Derek45's Avatar
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    sounds like a sending information issue from MPEM/ECU the MPEM does malfuntion on some points on these.

  3. #3
    I had an 04 GTX that did this, sounds strange but it was the regulator. I put in a new one and perfect. Have no clue why?

    The regulator sits on top of the fuel tank. It's about the size of a pack of cigarettes, is black metal and has cooling fins on. I think it covers the AC current to DC not too sure. An easy fix and they are known to fail.

  4. #4
    Kirk1964's Avatar
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    Thank you!!

  5. #5
    Kirk1964's Avatar
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    Thank you

  6. #6
    canuck's Avatar
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    Is the wiring connector at the rear of the hull fully engaged ? When mine stopped working I found the connector was not fully snapped together. Start with the simple stuff first.

  7. #7
    Kirk1964's Avatar
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    I checked that when I replaced the wheel sensor assembly. Thanks anyways.

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