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    Killswitch not working

    I killed the engine because the traffic wasn't moving. Now it wont start at all. Tried to roll start but it seems not to work.
    ?


    If I pry off the start button, will I be able to manually start it? By just bypassing the switch?

    What color wire is for the killswitch? Can I just cut those off and connect?
    GS1000G 1981

    #2
    Orange wire to the kill switch and orange/white from the kill switch.

    Don't pry off the button. Use a screwdriver to open the switch.
    Jordan

    1977 Suzuki GS750 (My first bike)
    2000 Kawasaki ZRX1100
    1973 BMW R75/5

    Comment


      #3
      Check the ignition fuse. Third from the top or the middle fuse.
      Find the plug for the handlebar switch
      Three wires,
      a) Orange, supply from fusebox
      b) Orange/White supply to coils after kill switch
      c) Yellow/Green supply to starter solenoid after start button.
      If you loop the O and O/W at the supply plug the ignition is live and you can roll start.
      If you loop the O and O/W at the plug and then close it up, you have bypassed the kill and should have push button start.
      This is the 850, almost identical.80GS850GT_wiring_color.jpg
      Last edited by Brendan W; 07-10-2020, 11:27 AM.
      97 R1100R
      Previous
      80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

      Comment


        #4
        I rolled it to a furniture store (damn this thing is heavy uphills), disassembled the switch thing, killswitch seems fine? Found a wire I had to short to start the bike, cut that wire off, had my wife start it with a paperclip and rode home clinching the wires together. Thank god I didnt stall it.

        I think the whole thing needs a good clean. Might actually take the left appart too, the honk button is severely wonky.

        Cut off a bit of the wire trying to strip it (furniture store had a very limited selection of tools to lend me) so I need to longer it.
        GS1000G 1981

        Comment


          #5
          I see bikebandit has both assys. Should I just replace them both?
          GS1000G 1981

          Comment


            #6
            Originally posted by Noreg View Post
            I see bikebandit has both assys. Should I just replace them both?
            Bike bandit is probably expensive. Definitely more expensive than a cleaning. You local auto parts place should have contact cleaner and dielectric grease to protect them after. If that doesn't fix things, you'll need to do some diagnosis with a meter to find where the problem really is.
            Dogma
            --
            O LORD, be gracious to me; heal me, for I have sinned against you! - David

            Skeptical scrutiny is the means, in both science and religion, by which deep insights can be winnowed from deep nonsense. - Carl Sagan

            --
            '80 GS850 GLT
            '80 GS1000 GT
            '01 ZRX1200R

            How to get a "What's New" feed without the Vortex, and without permanently quitting the Vortex

            Comment


              #7
              I did some experiments today. I am fairly certain the switch works now (I pulled the spring longer and sanded the connectors). But still no dice.

              Even if I hold something metal around it the bike wont start.

              Only way of starting it is having the orange red touch the orange white. Touching the orange red to one side of the killswitch also seems to work (it is somewhat hard to hold the loose wire and my paperclip).

              Im buying a voltometre and will find my soldering iron so I can solder the red and orange back in place.

              Could this be a dead fuse Im bypassing by moving the wire?

              Altho if the switch worked I guess I should be able to touch either end with the red and orange wire.

              Edit: I rested touching red and orange to the killswitch. If its in the on position you can touch either side and it runs. If off, only one side. This confirms the switch works. No idea why it wont run without the red and orange (headlight wire?) Touching it.
              Last edited by Noreg; 07-15-2020, 11:38 AM.
              GS1000G 1981

              Comment


                #8
                It was the fuse. I replaced all five (couldn't see which was damaged). So now I just need to solder the orange/red wire back on, reassemble the switchgear and Im good to go again!

                The entire fusebox looks a bit grimy, I got some contact cleaner and dielectric grease spray (couldnt find other kinds).

                I guess a box of fuses will be an addition to my bikes glove compartment. Do fuses blow regularly?
                GS1000G 1981

                Comment


                  #9
                  Originally posted by Noreg View Post
                  Do fuses blow regularly?
                  Very rarely.
                  ---- Dave
                  79 GS850N - Might be a trike soon.
                  80 GS850T Single HIF38 S.U. SH775, Tow bar, Pantera II. Gnarly workhorse & daily driver.
                  79 XS650SE - Pragmatic Ratter - goes better than a manky old twin should.
                  92 XJ900F - Fairly Stock, for now.

                  Only a dog knows why a motorcyclist sticks his head out of a car window

                  Comment


                    #10
                    Originally posted by Grimly View Post
                    Very rarely.
                    Could you quantify that? Like, is it once per season, or once per five years? I realize there isnt a clear answer, but I just want a ballpark. Wondering if an automatic fuse solution would be better for me. And how important a stack of spare fuses are. I got attacked by seagulls trying to get the bike started, and I am rather motivated to avoid that in the future.
                    GS1000G 1981

                    Comment


                      #11
                      Fight back, they're not so big. :0)
                      1981 GS1100E

                      Comment


                        #12
                        Originally posted by bull958 View Post
                        Fight back, they're not so big. :0)
                        They are small, but unfortunately they are vertically divided from me, and have the ability to litterarily s*hit all over me and my bike... It felt terrible at the time (winded from pushing this fat bike uphill) and covered in bird excrements in my new jacket, but I suppose its an amusing anecdote now.
                        GS1000G 1981

                        Comment


                          #13
                          Originally posted by Noreg View Post
                          Could you quantify that? Like, is it once per season, or once per five years? I realize there isnt a clear answer, but I just want a ballpark. Wondering if an automatic fuse solution would be better for me. And how important a stack of spare fuses are. I got attacked by seagulls trying to get the bike started, and I am rather motivated to avoid that in the future.
                          My 850 is seven years in the garage. It blew a fuse in the first summer. I was still sorting the electrical cornucopia bestowed by a PO or two.
                          Was it bad wiring or an old fuse? Who knows.
                          Since then, nada, nothing.
                          Some of the glass fuses you find are of poor quality. In particular the solder at the end caps cracks.
                          Test them with the bike running for a hot spot at one or both ends.
                          The fuse holders are prone to oxidation which does not help.
                          A good clean will.
                          Some have changed to a modern fusebox with blade type fuses.
                          97 R1100R
                          Previous
                          80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

                          Comment


                            #14
                            <shrug>
                            I've blown one fuse in the last 20 years and that was caused by carelessness.
                            Recently though, the main fuse developed a fault, which was a bloody nuisance as it was only 30 years old. I had to fit a new one.
                            ---- Dave
                            79 GS850N - Might be a trike soon.
                            80 GS850T Single HIF38 S.U. SH775, Tow bar, Pantera II. Gnarly workhorse & daily driver.
                            79 XS650SE - Pragmatic Ratter - goes better than a manky old twin should.
                            92 XJ900F - Fairly Stock, for now.

                            Only a dog knows why a motorcyclist sticks his head out of a car window

                            Comment


                              #15
                              Originally posted by Brendan W View Post
                              My 850 is seven years in the garage. It blew a fuse in the first summer. I was still sorting the electrical cornucopia bestowed by a PO or two.
                              Was it bad wiring or an old fuse? Who knows.
                              Since then, nada, nothing.
                              Some of the glass fuses you find are of poor quality. In particular the solder at the end caps cracks.
                              Test them with the bike running for a hot spot at one or both ends.
                              The fuse holders are prone to oxidation which does not help.
                              A good clean will.
                              Some have changed to a modern fusebox with blade type fuses.
                              The fuse holders looks well oxidated. I have some anti-oxidation spray. Is it safe to spray them liberally?

                              I replaced all the fuses (fuses are pretty cheap, and I couldnt remember which one was wrong).


                              Originally posted by Grimly View Post
                              <shrug>
                              I've blown one fuse in the last 20 years and that was caused by carelessness.
                              Recently though, the main fuse developed a fault, which was a bloody nuisance as it was only 30 years old. I had to fit a new one.
                              Thank you. Now I am assured the broken fuse was a case of extremely bad luck or a possible electrical error. All the fuses are replaced, and at least one of them had the metal lead just loose inside.

                              Is the main fuse different from the glas fuses? The electrical layout confuses me on these bikes. When I get more familiar I will get proper relays for my accessories, or a fancy automatic fusebox. It seems both the charging and the battery is strong though, so having the GPS directly connected to the battery hasn't posed an issue yet.

                              I am so puzzled why it broke just as I flipped the killswitch off (or on) or when I pressed the starter (it didnt turn over at all). I hope it isnt a symptom of some other error. But I guess I am all sorted to get it to the garage to sort the other issues, just have to solder the wire on.
                              GS1000G 1981

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