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  • Alternator wiring

    Anyone can help how to connect these wires to the alternator I know where to connect the red and the black wire the problem is where to connect the orange and purple wire it has 2 pin plug
    I have the plug but colours are both black
    Last edited by skrun; January 6th, 2019, 05:37 AM.

  • #2
    Looks like you bought the wrong ALT, what motor are you working on?
    What is the part number of the ALT?

    The orange would go on the large terminal with the nut. The purple would connect to one of the pins at the plug
    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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    • #3
      It's a 5.0 lit gxi

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      • #4
        I'm finding the ALT part number is 3860082 item 8
        https://www.marinepartseurope.com/en...0-30-9664.aspx

        This would make it like this one which does not use the plug
        https://www.amazon.com/ALTERNATOR-In.../dp/B00VB4PGD0

        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


        • #5
          If we knew what the part number of current ALT, we might be able to determine if it could be used with a modification
          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


          • #6
            looks like the wiring is for a Mando alternator and the new alternator is a Delco variant

            purple wire will go to the excite of the 2-pin plug. you may need to add a diode (read your installation instructions)
            the black is a ground that goes back to the block. that should be connected to the grounding lug on the alternator
            the orange is the feed back to the starter terminal. this gets connected to the B terminal. the little lead off the cable is for the external regulator that you no longer have. that can be tapped up.

            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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            • #7
              If you can take that one back and get the Mando alt that's what I'd do. The connections will be the same as on your OE alt.
              1988 Four Winns 200 Horizon
              4.3 OMC Cobra

              98 Jeep Grand Cherokee 4.0 Selectrac
              07 Jeep Grand Cherokee Limited 5.7 Quadradrive II

              "While air doesn't freeze....rust never sleeps"

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              • #8
                Thanks guys I returned the wrong ALT and got the proper one

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                • #9
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                  That small jumper off of the big orange B+ wire goes to the S for sense terminal.
                  1988 Four Winns 200 Horizon
                  4.3 OMC Cobra

                  98 Jeep Grand Cherokee 4.0 Selectrac
                  07 Jeep Grand Cherokee Limited 5.7 Quadradrive II

                  "While air doesn't freeze....rust never sleeps"

                  Comment

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