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Sender or switch?-gctid818706

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    Sender or switch?-gctid818706

    1997 3988 Cummins 315 hp

    My port oil pressure gauge was not working.

    I gave the parts house my engine serial number and requested (2) oil pressure sensors. (I learned my lesson - if you need one; order two.)

    In the attached picture the black unit is what was sent. I replaced the old with the new and now neither gauge works.

    Is the unit on the right (black) the sensor or switch?
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