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  1. #1
    Member
    Join Date
    Apr 2012
    Location
    Fairview, TN
    Posts
    153

    Mercury temp sending unit help

    I bought a sending unit that has 4 wires coming out of it. Marine dealer didn't have Two wire type. My original unit only had ground and tan wire. What do the other two wires go to? Computer to control fuel input? Motor is 98 200 efi serial 0G740530
    Thanks in advance

  2. Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
    Posts
    7,339
    #2
    should have 4 wires on , others go to ecu for temp monitoring fuel mixyures
    where the grass is green and the girls are pretty And remember falling feels like flying till you hit the ground

  3. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
    Posts
    82,023
    #3
    Moving thread to the correct forum for you.


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 44 years (learn something new every day).
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