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3 way Switch

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  • 3 way Switch

    Can some one explain this to me? I bought a boat and the nav lights are weird. The bow lights come on as soon as I put the them in the socket with the switch off. I turn the switch on and they go off but the dash lights come on. I am thinking the switch is wired wrong but I dont know how the way switches work. Any ideas?

  • #2
    simply google navigation light wiring and you will get thousands of hits.

    sounds like its wired wrong

    center should be off, forward both the nav lights and all-around light, with the switch aft, should only be the all-around light for anchoring.
    Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

    1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

    Past Boats
    1970 Wooster Hellion - Merc 9.8
    2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
    1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

    What’s behind you doesn’t matter.Enzo Ferrari

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    • #3
      Here is 2 methods to wire the lights, note one uses a diode

      Click image for larger version

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      94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
      95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
      07 Seadoo GTX
      Merc Adults Only VP Adults Only
      G-Dad always said "First Liar doesn't stand a chance"

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      • #4
        Here is a typical nav/anchor light wiring setup. This shows a DPDT setup using a steering diode. If you want to go without a steering diode, then you will need a different switch setup. Hope this helps you and you can transfer this to your setup.
        Tom Boy Boat Project https://forums.iboats.com/forum/boat...s-what-trailer
        Rebuilt trailer project https://forums.iboats.com/forum/gener...r-back-to-life
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        • #5
          OK got it. Thank you all so much for replying. I will try it and see if that works. I don't think it has a diode but I am gonna check and make sure.

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          • #6
            see the first schematic that AD posted.
            Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

            1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

            Past Boats
            1970 Wooster Hellion - Merc 9.8
            2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
            1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

            What’s behind you doesn’t matter.Enzo Ferrari

            Comment


            • #7
              Sign up today
              The bow lights come on as soon as I put the them in the socket with the switch off. I turn the switch on and they go off but the dash lights come on.
              Just thought of something else, it could be the original switch was replaced with the wrong type. You need a ON/OFF/ON DPDT, so it has an OFF position in the middle
              94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
              95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
              07 Seadoo GTX
              Merc Adults Only VP Adults Only
              G-Dad always said "First Liar doesn't stand a chance"

              Comment

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