Oil Pressure System monitor sensor location?

Discussion in 'General Maintenance/Repair Questions' started by ROTYDE, May 26, 2022.


    ROTYDE New Member

    Apr 28, 2017
    Steenson Hollow ,Muscle Shoals Ala
    SeaRay 330 Sundancer
    Twin 454's V Drives
    I have a 1996 330 Sundancer with twin 7.4L mercs shaft drives. What sensor or sending unit controls the oil pressure warning light on the system monitor panel on the dash? Does it operate off of the oil pressure sending unit or does it have a separate senor in the block somewhere?
  2. Bill Curtis

    Bill Curtis Active Member

    Mar 24, 2022
    Ahoskie, NC
    '95 220 Overnighter
    7.4 Bravo3
    There is a separate pressure switch on port side of the block where the filter goes. The one on the back / top of the block behind dist is pressure sender.

    The alarm is just a pressure "switch". The gauge sender is a variable resistance "sender".

    For the life of me, I don't know why they didn't just put a "T" in the top one and run both the sender and the switch to it. I guess to save the HUGE expense of adding a "t" and just putting it in an existing hole.
    Last edited: May 28, 2022
    techmitch likes this.

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