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Making Restitution For Jumping My 850

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    Making Restitution For Jumping My 850

    As some may know, I spent some time jumping my 850 and now it won't start. To, ahem, rectify my situation, I've ordered a used Honda CX500 RR to install next week. I'm assuming that my stock RR is shot.

    While I don't have the CX500 RR in hand yet, I think they have one red, one black, and three yellow wires. My educated guess would be that the three yellow wires will be connected to the w/bl, w/r, and w/y(?) coming from my stator, while the red and black wired connect to the red and black on my bike's harness. (While I'm thinking about it, in theory, can't the w/bl, w/r, and w/y wires coming from the stator attach to any of the equivilent going to the RR?.)

    Now let's just hope that the stator and coils have survived. 8O

    Best.

    #3
    The yellow wires connect to the stator wires in any order as you have described.

    The BLACK wire connects to any switched positive (+12V that is only live when the key is on) -- it's the "sense" wire for the regulator.

    The GREEN wire goes to ground (like house wiring).

    The thick RED wire goes to battery positive (+12V).

    I have no idea why they used black for a switched +12V connection, but then again, Honda probably never anticipated that their reg/rects would be eagerly transplanted into ailing Suzukis two decades later...
    1983 GS850G, Cosmos Blue.
    2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
    2015 Yamaha FJ-09, Magma Red Power Corrupts...
    Eat more venison.

    Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.

    Celeriter equita, converteque saepe.

    SUPPORT THIS SITE! DONATE TODAY!

    Co-host of "The Riding Obsession" sport-touring motorcycling podcast at tro.bike!

    Comment


      #4
      It's a better ground to connect the RR ground directly to battery negative. Check the stator papers (garage section of this site) for effective tests to determine if the ground is good (and also the positive circuit).

      Comment


        #5
        Yeah, what Ian said...
        1983 GS850G, Cosmos Blue.
        2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
        2015 Yamaha FJ-09, Magma Red Power Corrupts...
        Eat more venison.

        Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.

        Celeriter equita, converteque saepe.

        SUPPORT THIS SITE! DONATE TODAY!

        Co-host of "The Riding Obsession" sport-touring motorcycling podcast at tro.bike!

        Comment


          #6
          Pictures of how I did it, with instructions


          1981 GS650G , all the bike you need
          1980 GS1000G Power corrupts, and absolute power corrupts absolutely

          Comment


            #7
            Thanks folks. Sorry for the late reply, but we're all on vacation at my in-laws in NE. (Thank goodness for a laptop and an ethernet connection at the lake cabin.)

            I should get the RR sometime this week. Looking forward to the transplant.

            Concerning the stator, I imagine that there was some risk to the stator coils while doing the illicit jumping. Does anyone have an idea of the risk of damage to the stator?

            Thanks and will keep you posted.

            Comment


              #8
              THe stator is not going to be damaged by a jumpstart, the RR might be. Stators are damaged by shorted regulators that basically ground out the legs of the coils. THey also take a beating from hot oil.

              Of course there are plenty of stories of stators being "blown out" by a jump start, not very easy or likely to do. Regulators get it when a jumper cable accidentally touches ground and the resultant surge pops the transistors that regulate the output. Adding CB radios, radar detectors, lights, electric gloves, electric boots, electric jackets, electric helmets, etc are not a good ideas as the electrical system is designed to charge a small battery, not power a car stereo.
              1981 GS650G , all the bike you need
              1980 GS1000G Power corrupts, and absolute power corrupts absolutely

              Comment


                #9
                The stator and RR along with the battery and associated portions of the wiring harness consitute the charging system. It's doubtful that they would be damaged by jump starting the bike from a car battery, with the possible exception of the bike battery. It's usually recommended to shut the car motor off when jumping a bike, it doesn't need 60 to 100 amps from the car's alternator to crank over. The car battery by itself will easily provide the 10 amps or so needed to crank the bike's starter. If anything would be damaged it might be the battery. The fuse(s) should protect the rest of the wiring from the car's output. YMMV (your mileage may vary). Your bike doesn't even need the charging circuit to be connected for the motor to run. If there is 11 or 12 volts available from the battery and present at the coils, the bike should start and run for approx. 8 hrs. with no lights and approx. 90 minutes with headlight and other lights on. This is assuming that the battery is good and the ignition system (ignitor, pickup coils, ignition coils, and plugs) is also good. Again, YMMV. These bikes use what is called battery/coil ignition as opposed to magneto igniton. The charging circuit just gets power back into the battery. The bike can be run without the charging system connected, which is outlined in the Stator Papers in the Garage section of this site.

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