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Switch and fuse block wiring

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  • Switch and fuse block wiring

    I'm looking to completely rewire my boat to include a circuit breaker. I have a Blue Sea 5025 Fuse Block with attached Neg Bus Bar and a Blue Sea WeatherDeck Swich only panel. Both have contradictory wiring diagrams. The switch is pre-wired with a single red wire, that the wiring diagram states should be connected to the supply wire. From there, positive leads run from the switch to the breaker and then to the load. The Fuse Block diagram, however has the positive and negative supply going to the breaker and the red lead wire from the switch to one of the breakers on the Fuse Block. What is the correct wiring for this setup?

  • #2
    Fuse panel is where main power comes in and goes thru fuses. Other side of fuse exits to individual switches. Other side of switch goes to individual units being powered. Return legs comes back to negative fuse panel

    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
    Raw Water Pump Maintenance
    Merc Adults Only

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    • #3
      Originally posted by AllDodge View Post
      Fuse panel is where main power comes in and goes thru fuses. Other side of fuse exits to individual switches. Other side of switch goes to individual units being powered. Return legs comes back to negative fuse panel
      What do I make of the supply wire coming from the switch panel? Does this get capped, or attached to the fuse panel? Thanks for the responses!

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      • #4
        Which WeatherDeck switch panel do you have?
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        • #5
          Originally posted by GA_Boater View Post
          Which WeatherDeck switch panel do you have?
          Blue Sea WeatheDeck PN 4307, no backlight.
          Last edited by CeeJ1791; September 23rd, 2017, 07:14 PM.

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          • #6
            Here is a simple schematic I drew up. Still not exactly sure what I'm supposed to do with the wire coming out of the switch panel...
            Last edited by CeeJ1791; September 23rd, 2017, 11:47 PM.

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            • #7
              Originally posted by CeeJ1791 View Post

              What do I make of the supply wire coming from the switch panel? Does this get capped, or attached to the fuse panel? Thanks for the responses!
              The only supply wire that might be in the panel is to light it up, otherwise there should be no main power wire. The switch panel shouls it bing used by a different Blue Sea fuse panel without Pos or Neg buss bars. This one shows power being daisy chained, then other shows individual leads
              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
              Raw Water Pump Maintenance
              Merc Adults Only

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              • #8
                Originally posted by AllDodge View Post
                Other side of fuse exits to individual switches. Other side of switch goes to individual units being powered.
                There is no "in " and "out" on the Fuse Block or the switch panel. Do I just pig tail them to together? For example; main power goes to Fuse block, from there a wire goes from a Fuse into a single switch, then pig-tailed from the switch is a wire to say the bow light?

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                • #9
                  Deleted
                  Last edited by Silvertip; September 24th, 2017, 11:47 AM.

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                  • #10
                    Originally posted by Silvertip View Post
                    Yes. Just follow AllDodge's diagram. It can't be made simpler than that. If the OUT side of each switch has a pigtail on it, remove that pigtail and install the spade connector on the accessory wire and connect that to the switch. That eliminates a point of failure.
                    It's almost embarrassing it took me this long to figure it out.. I got so hung up on the supply wire on the switch to realize I just have to simply remove the daisy chain to use with the fuse block. I was making it more complicated than it was. Thanks all!

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                    • #11
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                      Originally posted by CeeJ1791 View Post

                      It's almost embarrassing it took me this long to figure it out.. I got so hung up on the supply wire on the switch to realize I just have to simply remove the daisy chain to use with the fuse block. I was making it more complicated than it was. Thanks all!
                      Updated schematic

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