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  1. 06-15-2022, 07:44 PM #1
    Tparkin
    Tparkin is offline
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    2013 Optimax 250 ProXS --->2020 300R Repower

    Mercury 300R L CMS, Mech - Ser #: 2B783689

    Just installed a 2020 300R to replace a 2013 Optimax 250 ProXS. Going through everything before rigging it up. I have a 6 pin harness from the Opti rigging that says Fuel Paddle on it...has a 8M# but its faded off and I can't read it but it was plugged into the engine before. I do not see a connector on the 300R that accepts this 6 pin connector. Does anyone know what this harness provides and if it is needed with the new setup. For reference, I have a SC1000 gauge with an analog fuel gauge that also plugs into the back of the SC gauge with a pigtail. Smartcraft shows fuel remaining, fuel consumption, etc...so, I assume this harness provides that info.
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  2. EuropeanAM
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    Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #2 06-16-2022, 07:05 AM
    Fuel harness connector is at the back of the engine (similar location as the clean power
    and 14-pin).


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