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Should I open the wiring harness?

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    Should I open the wiring harness?

    A mouse got into the air filter long before I bought the bike, and tore that up. Maybe the same happened to the wires? I'm thinking of slicing open the wiring harness (at least from the coils to the CDI box) to see if there is any damage or grime built up.

    Is this a good idea?
    1980 GS550E

    #2
    If you don't see any evidence of tattered insulation due to chewing, you won't find anything by opening it up.

    And good luck finding wires between your coils and a CDI box, because your bike does NOT have a "CDI box".

    .
    sigpic
    mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
    hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
    #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
    #2 son: 1980 GS1000G
    Family Portrait
    Siblings and Spouses
    Mom's first ride
    Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
    (Click on my username in the upper-left corner for e-mail info.)

    Comment


      #3
      Sorry, force of habit. I mean igniter.

      Whenever I google CDI box for my make and model, it shows a picture of the igniter. Looking up "igniter" shows the signal generator. Google is weird.
      1980 GS550E

      Comment


        #4
        I'm with Steve. Don't fix stuff that's not broke.
        If you want to check out the harness you could do a lot worse than
        Open and clean the ign and kill switches.
        Clean the fusebox and the plug on it's tail.
        Have a look for binding or chafing at the steering stem and check out the harness supports on the spine of the bike between the coils.
        97 R1100R
        Previous
        80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

        Comment


          #5
          I did crack open the kill switch and blast some contact cleaner in there, it didn't look corroded, if I recall.
          How would I take apart the ignition? There looks to be a lot to remove just to get at it: handlebars, instrument panel...
          1980 GS550E

          Comment


            #6
            Originally posted by ZombiePotatoSalad View Post
            I
            How would I take apart the ignition? There looks to be a lot to remove just to get at it: handlebars, instrument panel...
            Are you talking about the ignition SWITCH?

            Remove the headlight from the bucket.
            Might have to remove all the wiring from inside the bucket. See if the bucket will swing out of the way when you ...
            Remove the bucket from the mounting ears.
            When the bucket is out of the way, you have access to the ignition switch. Just a couple of bolts and one 4-pin connector. When you get the assembly off the bike, you can remove the actual switch portion from the lock assembly, open it up and clean it.

            Assembly is the reverse of removal.

            .
            sigpic
            mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
            hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
            #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
            #2 son: 1980 GS1000G
            Family Portrait
            Siblings and Spouses
            Mom's first ride
            Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
            (Click on my username in the upper-left corner for e-mail info.)

            Comment


              #7
              Alright, thanks. I was referring to where the key goes. I've heard that's another area where voltage can drop.
              1980 GS550E

              Comment


                #8
                The easiest way to see how much (if any) is dropping through the ignition switch is to check the voltage at the fusebox.

                The MAIN fuse is connected directly to the battery and feeds the ignition switch via a red wire. The ignition switch sends power back to the LIGHTS, SIGNALS and IGNITION fuses via a solid orange wire. Pull one of those fuses out of the box, turn on the key, use a test light or voltmeter to see which end of the fuse is fed from the ignition switch. (A test light will be quicker and easier, but you will need the voltmeter for the next step.) With the ignition switch ON, place one meter lead on the MAIN fuse, the other lead on the 'hot' side of the fuse you just removed. If your meter is set to DC volts, you will see how much voltage is dropping through the ignition switch.

                .
                sigpic
                mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
                hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
                #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
                #2 son: 1980 GS1000G
                Family Portrait
                Siblings and Spouses
                Mom's first ride
                Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
                (Click on my username in the upper-left corner for e-mail info.)

                Comment


                  #9
                  I pulled the IGNITION fuse and touched the one lead to the MAIN fuse clamp, the other to the motor casing as a test. Read 12.19.
                  One lead to MAIN, the other to IGNITION clamps. Reads 0.11 volts. 15709138975214944463563388161232.jpg
                  Last edited by ZombiePotatoSalad; 10-12-2019, 05:43 PM.
                  1980 GS550E

                  Comment


                    #10
                    Also, the plug that connects the ignition switch to the wiring harness is stuck. I'm guessing it may have fused together at some point. Any ideas how to get it loose?1570922526345369454968950471148.jpg
                    Last edited by ZombiePotatoSalad; 10-12-2019, 07:22 PM.
                    1980 GS550E

                    Comment


                      #11
                      Originally posted by ZombiePotatoSalad View Post
                      Also, the plug that connects the ignition switch to the wiring harness is stuck
                      That could be due to corrosion. If it where me I'd try squirting some contact cleaner in there and letting it set awhile to work it's wonder then try prying the plug apart.
                      1980 Yamaha XS1100G (Current bike)
                      1982 GS450txz (former bike)
                      LONG list of previous bikes not listed here.

                      I identify as a man but according to the label on a box of Stauffers Baked Lasagne I'm actually a family of four

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                        #12
                        Did that. The entire plastic plug came off the wires. Ah, well. I can always buy a new one.
                        1980 GS550E

                        Comment


                          #13
                          These are the wires. Even connected like this,
                          it still read 0.11 volts. 20191012_191712.jpg
                          1980 GS550E

                          Comment


                            #14
                            this is so confusing.......................did you replace the fused effed up connector?
                            You need a local friend you are second guessing things and not being methodical

                            review the nomenclature and understand that the likelihood of a bike like your starting begins with the battery voltage. Its not magic.
                            1983 GS 550 LD
                            2009 BMW K1300s

                            Comment


                              #15
                              I have not yet. I just plugged the wires into each other. I need to go to a hardware store or something for new ones. I have a new ignition switch coming on Monday, I'll wait for that so I can go get one to fit it, I think.

                              This is the first motorcycle I have ever owned or worked on. My previous experience with any mechanical work is to fix a bicycle. Previous electrical experience is taking the casing off of a VCR.
                              I have a hard time finding the exact words I want to say, it's a fun effect of autism. While typing allows me more time to think than speaking, I still have some difficulty expressing exactly what I want to say. Especially when it's with something I know next to nothing about, and have been messing with on and off for the past 5 months and making little progress, with the deadline of winter fast approaching. So if I confuse you with my lack of proper terms, I'm sorry. That is not my intent. That's just my inexperience talking. And I've tried to find people nearby. I've made Craigslist posts asking for help, and I've asked people I pass on the sidewalk. No replies, and no one knows anything about motorcycles.
                              Last edited by ZombiePotatoSalad; 10-12-2019, 10:02 PM.
                              1980 GS550E

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