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  1. 03-04-2024, 09:02 AM #1
    Atomicbassturd
    Atomicbassturd is offline
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    Question Efi to optimax rigging question.

    If a person decides to upgrade from a Mercury 2.5L 200 efi to an optimax, can the existing harness and gauges be used?
    Thanks.
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  2. EuropeanAM
    EuropeanAM is offline
    Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #2 03-04-2024, 09:22 AM
    Gauges: Yes.

    You MIGHT have to have an adapter harness, depending on the serial number of the Optimax.

    Moving your thread to the 2.5L Forum.


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