57 35hp – wiring questions please?

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  • December 4, 2024 at 11:06 pm #292430
    crosbyman
    Participant

      Canada Member - 2 Years

      I suspect the  ground wire on the mercury switch (glob) would either read  full 12v …..with  the switch being OPEN and  being the highest resistance point in the series cct  back to the solenoid and START key position  (ohms law).

      or  would read 0 volts  as it becomes the ground referrence.   for the coil when the switch  closes to grd.

       

      needs to be tested I guess.

       

      Joining AOMCI has priviledges 🙂

      December 5, 2024 at 3:08 am #292431
      frankr
      Participant

        US MEMBER PAY BY CHECK

        John, it’s 3.00 AM ĥere,but l will make one small comment. You have a car solenoid, going by your previous tests.

        December 5, 2024 at 12:24 pm #292432
        outbdnut2
        Participant

          US Member

          The solenoid you want is Sierra #18-5807.  or OMC #0378444.  Link to both of them below.   As Frank explained – they look same as the Ford part but are wired different inside.

          Dave

          https://www.marineengine.com/newparts/part_search.php?part_num=18-5807

          December 5, 2024 at 12:40 pm #292433
          frankr
          Participant

            US MEMBER PAY BY CHECK

            Here is the correct wiring diagram for a 1957 w/ generator kit. Simply ignore the stuff related to the gen.
            The car solenoid won’t work.

            Wiring-1957-35hp-RDE-19-with-gen-kit

            December 5, 2024 at 12:50 pm #292435
            John Gragg
            Participant

              US Member

              Hi Frank,

              Yes, I knew that this solenoid was for a car. I just didn’t have enough information at the time of purchase to know that it wouldn’t work for my application. I knew the ARCO SW081 was the direct replacement, but getting one was over a week lead time so I just went to O’Reillys hoping for the best.

              Thanks for the updated drawing. I ordered an ARCO SW058 last night based on a few posts I found on this site, but I have a feeling even that one is wrong so I’m going to cancel it and just wait the 9 or 10 days for the correct one.

              Thanks again for the new diagram.

              Best Regards,

              John Gragg
              RIverside, CA

              Just starting in the hobby, please be patient.

              48 Sea King 5hp GG9014A
              49 Sea King 5hp GG9014A
              48 Johnson TD20
              49 Johnson TD20
              54 Johnson QD15
              55 Johnson CD12
              57 Johnson RJE-19M
              57 Johnson RDE-19

              December 5, 2024 at 1:02 pm #292436
              frankr
              Participant

                US MEMBER PAY BY CHECK

                Correct (Sierra Marine) solenoid for your motor. OMC #378444. Note the coil is NOT connected to mounting/ground strap.

                Solenoid-378444

                December 5, 2024 at 1:26 pm #292438
                John Gragg
                Participant

                  US Member

                  Thanks Frank,

                  I cancelled the SW058 order and ordered this one. Paid a few extra dollars to get it here early next week.

                  Thanks again for the assist!

                  Best Regards,

                  John Gragg
                  RIverside, CA

                  Just starting in the hobby, please be patient.

                  48 Sea King 5hp GG9014A
                  49 Sea King 5hp GG9014A
                  48 Johnson TD20
                  49 Johnson TD20
                  54 Johnson QD15
                  55 Johnson CD12
                  57 Johnson RJE-19M
                  57 Johnson RDE-19

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