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    Bilge pump issue

    The owners manual calls the pump a manual bilge pump. Located at the front end of the engine bay. It has no visible float. I believe there is power to the brown wire , I will check it again. I was advised that it was left on over night last year. The switch on the helm says Aft bilge pump. It says under the switch manual and auto. Does not work in either position. Note. When I turn on the navigation lights, the auto light under the bilge switch lights up, but pump dos not run. Trying to find out if there could be an in line fuse I am missing. Pop out breakers on DC electric panel are all in. Any ideas or input would be greatly appreciated.
    Raymond 14
    1997 3388ES
    twin merc 350 inboards

    #2
    Most bilge pumps have an inline fuse located near the pump.
    Dave
    Edmonds, WA
    "THE FIX"
    '93 2556 5.7 Bravo II 2.0:1 18 1/4x19 P
    (.030 over-Vortec top end-part closed cooled)
    The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
    Misc. projects thread
    https://www.baylinerownersclub.org/f...56-gctid789773

    Comment


      #3
      I tried tracking the wire, got it back to the bulk head, did not see one, I will check again and further. Would it be located near the battery switches? Everything from DC panel back to engine bay is behind a finished wall, with no access that I know of. Thank you.
      Raymond 14
      1997 3388ES
      twin merc 350 inboards

      Comment


        #4
        May not have an in-line fuse. I’d check the switch for 12 volt supply then check the connection at the pump.
        Dave
        Edmonds, WA
        "THE FIX"
        '93 2556 5.7 Bravo II 2.0:1 18 1/4x19 P
        (.030 over-Vortec top end-part closed cooled)
        The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
        Misc. projects thread
        https://www.baylinerownersclub.org/f...56-gctid789773

        Comment


        • Raymond14
          Raymond14 commented
          Editing a comment
          Thanks

        #5
        Check your battery panel for quick rest fuses. manual means switch operated for what that is worth vs. hand lever pumping like a sailboat might have.
        Mark
        USCG OUPV
        1990 4588
        Carlsbad, CA

        Comment


          #6
          Thanks
          Raymond 14
          1997 3388ES
          twin merc 350 inboards

          Comment


            #7
            On my 3788 the fuses are located on the battery switched panel.
            Tony Bacon,
            Washougal, WA
            Caspian
            1997 3788 Twin Cummins 250hp

            Comment


              #8
              Thank you
              Raymond 14
              1997 3388ES
              twin merc 350 inboards

              Comment


                #9
                Here is where I am at. If this is too long,or too fool a question (s) delete it. I tested the switch. Has two positions and two brown wires going to it. Switch is good. Jumped the wires no start of the pump. Next going back too engine to check for power again and make sure of ground. Looked at replacement pumps ( 6 amps according to manual ) . Auto with no switch and a manual turn on , have 3 wires. Brown,brown and white and black. Can't for the life of me, find a diagram showing how to wire. What I think. Ground goes to a ground that is running to existing pump and located ,connected somewhere in the engine bay. One video says connect the brown and white to the manual and the brown to auto. But, there is only one brown wire going to the existing pump. Then my feeble mind asks, if I just seal the brown and white wire , since I do not know where to attach it, would it just bean auto bilge and be good to go. Again , sorry for all this writing. Just got to our new club and want to get boating. Thanks in advance for any help and reading this.
                Raymond 14
                1997 3388ES
                twin merc 350 inboards

                Comment


                  #10
                  Like this. The on/off toggle can be thought of as a manual override switch to kick the pump on in the event the float switch has failed for whatever reason. The alarm device is optional but is a great thing to wire in. It recently saved one of our members from a catastrophe The diagram shows the float switch and negative wired directly to the battery, that will work but it's best to avoid having multiple wire connections at the battery posts.
                  Click image for larger version  Name:	image.jpeg Views:	1 Size:	49.3 KB ID:	507678
                  Dave
                  Edmonds, WA
                  "THE FIX"
                  '93 2556 5.7 Bravo II 2.0:1 18 1/4x19 P
                  (.030 over-Vortec top end-part closed cooled)
                  The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
                  Misc. projects thread
                  https://www.baylinerownersclub.org/f...56-gctid789773

                  Comment


                    #11
                    The brown wire is power and the brown/white supplies power to the red warning light at helm to indicate the automatic pump is activated and pumping. Water is present. Should be connected to pump switch.

                    Comment

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