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  1. #21
    Moderator beerdart's Avatar
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    With the key on put the probes into the back of the connector rotate the wheel it should pulse a voltage.


  2. #22
    MSX 150 guy lives on Mr. GP1800's Avatar
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    It shows a very small millivolt reading. Looks like it jumps 10-12 millivolts when you move the paddle wheel past the sensor.

  3. #23
    Moderator beerdart's Avatar
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    Try it from the pr/yl to ground.

  4. #24
    MSX 150 guy lives on Mr. GP1800's Avatar
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    Quote Originally Posted by beerdart View Post
    Try it from the pr/yl to ground.
    Thats what I did

  5. #25
    MSX 150 guy lives on Mr. GP1800's Avatar
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    oops. my ground probe came off. Im seeing 9.75 volts. Drops to 5.75 when I spin the wheel

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  7. #26
    MSX 150 guy lives on Mr. GP1800's Avatar
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    So my guess is that the display outputs voltage on the purple/yellow wire and measures the speed of fluctuation from the paddle wheel.

  8. #27
    OK, this is the info I was looking for. We can use the Sea Doo circuit for this. We will be able to offer the Polaris MSX version at the same price as the Sea Doo version, $119.


  9. #28
    MSX 150 guy lives on Mr. GP1800's Avatar
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    Quote Originally Posted by CANDooPro View Post
    OK, this is the info I was looking for. We can use the Sea Doo circuit for this. We will be able to offer the Polaris MSX version at the same price as the Sea Doo version, $119.

    Awesome!!!!!!! I can't wait!!!!

    Can a moderator move this thread to the Polaris MSX/Matrix section? It may get a lot more notice there for the Polaris guys.

  10. #29
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by CANDooPro View Post
    That is a somewhat standard Sumitomo connector. Not too easy to source in the US as it is a Japanese connector, but I can get them...
    Looking at the connector closely I can just make out the Sumitomo logo Name:  Sumitomo logo.gif.jpg
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    There is also a P and 18 molded into the connector shell.
    The connector in the photos is the wiring harness side that comes from the display.

    I did not look closely at the mating connector from the paddle wheel speed sensor as that connector is located fairly far back inside in the hull.

    Click image for larger version. 

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    Last edited by K447; 08-31-2014 at 10:49 PM.

  11. #30
    Click avatar for tech links/info K447's Avatar
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    Arrow Voltage measurements for Polaris NGI display paddlewheel sensor

    Quote Originally Posted by BryanP View Post
    ... I'm seeing 9.75 volts. Drops to 5.75 when I spin the wheel
    My measurements;

    NGI display supplied with 14.2 volts from regulated DC power source.

    At speedometer sense wire, measured to Black/ground.
    12.6 volts open circuit from NGI display, with no sensor connected
    Note: 10.3 volts with 1K ohm test resistor load, suggests equivalent series resistance of approx. 220 ohms. Circuit appears to be overload protected as voltage collapses to under 2 volts with low resistance loads.

    11.7 volts with speedometer sensor connected.
    5.95 volts when paddlewheel magnet passes Hall Effect sensor

    There are two magnet lobes and two non magnet lobes in the four lobe paddlewheel.
    Last edited by K447; 03-31-2014 at 09:37 PM.

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