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4587 wiring Schematic

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    4587 wiring Schematic

    Cleaning up 30 years of wiring on 1991 4387's flybridge...
    Is anyone have schematic or working knowledge of Bayliner wiring colors?
    There are two 10 or 12 awg wires feeding accessory fuse block on FB... One of them is definitely aftermarket. Why 2 bus feeds??????
    Additionally have 3 cables from factory harness, single RED, and single BLUE with 12 volts in key off position, plus BLACK negative.
    They look like 12 awg but could be 10 awg. All 3 terminate at 6 line push on terminal strips with nothing connected...
    Am I correct assuming RED and BLUE circuits are factory accessory buses?
    Also have found disconnected 12 awg blue wire heading under monkey fur at center behind helm going forward with anchor lamp wires.
    Put volt meter on it. Its dead. Same for ohmmeter it has no path to negative.
    Ideas welcome
    Rod
    Rod
    1991 4387

    #2
    You might find a schematic here and then click on Owner Documents under Owner Corner
    It's all a dream
    '03 245 5.7/BIII & '07 Sedona pontoon

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      #3
      Installed new middle/engine space with Rule 2000 pump, float switch and aft bilge float switch. This was the part...
      Wiring was a rats nest of heat shrink crimp connecters some not, even had 3 marrette's. Even had one soldered connection.
      Tore everything out and started with terminal strip and waterproof blade fuses on each pump.
      You cant see it in picture but 10 awg wires are on standoff going over terminal strip.
      Even put shower sump pump on bottom two terminals.
      Least when next owner has to change pumps or float switches the wiring will be easy to get at.
      Click image for larger version

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      Attached Files
      Rod
      1991 4387

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