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The Headlight Demon is at it again (2 yr battle)!

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  • The Headlight Demon is at it again (2 yr battle)!

    So I've been battling headlight issues for about two years now, and I don't know how to fix the issue this time. I have a 1999 GSX600F and I've read just about every thread about headlight issues and to no avail. The symptoms I am experiencing sound just like that of a faulty headlight relay as found on CyberPoet's write up http://www.motorcycleanchor.com/moto...lectrical.html., but I didn't think a 1999 had a relay. The majority of the time I do not have any lights (low nor high) but occasionally, they will work (both low and high). When the headlights don't work, neither does the highbeam indicator, but when they do work it lights up.

    Here is what I've checked so far:
    • I have continuity throughout both the low beam and high beam circuits (yellow and white wires) all the way from fuse box to bulbs.
    • Fuses are fine
    • Bulbs are fine
    • Ignition connections are fine

    Here are my concerns:
    • Voltage reads only .01V for both low and high circuits (no matter where in the circuit I test).
    • I took the dimmer switch apart and checked for continuity and found that I had continuity in both low and high circuits regardless of the switch position. In other words, when I had the switch set to high beams, I still had continuity in the low beam circuit and vice versa. I would think that continuity would break when you toggle the switch.

    My connection behind the third eye showed a burnt connection between the low beam connection and the high beam connection, so I cut each wire on both sides of the connection and soldered each wire together, then wrapped with electrical tape. This solved the problem for awhile but now they don't work again. Rarely, they will come on mid-ride and stay on until I turn the ignition to 'off'. The lights don't flicker at all...they are either on and steady or as is most often the case, they are off.

    Does anyone have any suggestions on what you think my problem is? I originally thought it might be a bad ground, but all other systems on the bike are working fine. I've had Thom (Thazkat) take a look and he was stumped...maybe he can chime in on anything I've missed that we have already ruled out. Matt (MD) is telling me just to run new wires, but I wouldn't know where to splice them in at. Please help!
    1999 Black Katana GSX-600F

  • #2
    I know from reading on here, that the newer Kats have an issue in the pods where one of the contact solder points actually comes off. (like a cold solder point) Resoldering it back corrects the problem for those that have run into that. Dont know if that might be your case, but it is one thing to check.
    If its not broke, Hit it with a bigger hammer and blame it on cheap imports

    RIP Dad 3/15/08 Love and miss ya already




    Originally posted by Nero
    Even I played for a minute or so, then I recovered what little manhood I had left and stopped.

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    • #3
      You did not find the problem on Saturday! How did you make it home?
      sigpic

      RIP CP
      50th Anniv R6
      95 Katana 600
      http://www.assfaultjunkies.com/index.php

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      • #4
        he follow me home sunday from thom's but we got back right before dark
        Chrome Project Part 1
        http://www.freewebs.com/mreedohio/

        Chrome Project Part 2

        http://katriders.com/vb/showthread.php?t=91192

        Chrome Project Part 3
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        Chrome Project Finished
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        • #5
          Originally posted by mreedohio View Post
          he follow me home sunday from thom's but we got back right before dark
          Cool, I was a little worried if he didn't get it fix on Saturday on how he was getting home.When we left the Pony it was starting to get dark.Are you going out riding down here again soon? Last weekend was a good ride.
          sigpic

          RIP CP
          50th Anniv R6
          95 Katana 600
          http://www.assfaultjunkies.com/index.php

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          • #6
            my battery died as soon as i got home from the last ride. i still have to get a new one. i sure did have fun last time, nearly pee pee'd my pants a few times. i got some riding plan coming up. so i dont know if ill have the free time this season to get back down there. hoping with dan oct sometime and if my wife sells her bike this week, a 2up ride down to tennesse the last weekend in october. maybe i can convince the wife to let us go hit up the dragon while we're there.
            Chrome Project Part 1
            http://www.freewebs.com/mreedohio/

            Chrome Project Part 2

            http://katriders.com/vb/showthread.php?t=91192

            Chrome Project Part 3
            http://katriders.com/vb/showthread.php?t=91192&page=30

            Chrome Project Finished
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            • #7
              Originally posted by mreedohio View Post
              my battery died as soon as i got home from the last ride. i still have to get a new one.
              Sure it's the battery and not a charging issue ?
              I am a fluffy lil cuddly lovable bunny , dammit !



              Katrider's rally 2011 - md86

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              • #8
                i tested the battery at thoms and it wont hold charge. he read the volts and said it was way under what i needed i think he said like 6v maybe. we did kinda drain the battery at the wrenchfest getting the bike to start.
                Chrome Project Part 1
                http://www.freewebs.com/mreedohio/

                Chrome Project Part 2

                http://katriders.com/vb/showthread.php?t=91192

                Chrome Project Part 3
                http://katriders.com/vb/showthread.php?t=91192&page=30

                Chrome Project Finished
                http://katriders.com/vb/showthread.php?t=107586

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                • #9
                  The fact that they come on and off intermittently would make me suspect a short in the wiring harness.... but that would pop fuses.

                  Does your bike have the flash to pass button?

                  Does it have the flash to pass wiring?

                  Something must be coming loose occasionally....
                  -Steve


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                  • #10
                    start simple -

                    -check grounds, all of them, 1 bad ground can mess up the troubleshooting process.

                    -Connections, sure you didnt miss any little connections? something corroded?

                    -Relays, I dont know much about the kat wiring harness really, but I did have a v65 magna that the headlight relay would show continuity, and would work after a while, but when the bike was cold it wouldnt work. If it got jarred around, or if it had time to warm up with would work. The solder points become loose on them, and the restitance or heat that would build up from it bieng loose, melts the solder ever so slightly to make a connection like how you say it will come on mid ride , then go off after you cut the key off, i was having the same problem. If it doesnt have relays, just stick with the basics, grounds are apparantly a huge problem in motorcycle wiring do them bieng open to the elements, exposed to huge amounts of vibration , etc.


                    Hope that helps some.
                    Currently Riding:
                    1995 Katana 600
                    V&H Exhaust
                    Jet Kit



                    SOLD
                    2003 SV650S - Orange Comet Project
                    1987 XV700 Bobber
                    REPO'D - 2004 Harley XL1200R


                    “Ill Keep Freedom, My Guns, & My Money, You Keep The Change

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                    • #11
                      Originally posted by Newbie2it View Post
                      I know from reading on here, that the newer Kats have an issue in the pods where one of the contact solder points actually comes off. (like a cold solder point) Resoldering it back corrects the problem for those that have run into that. Dont know if that might be your case, but it is one thing to check.
                      Nope, I've checked all the joints in the pods and they are all fine...at one point the joint in the ignition came unsoldered, but that has long been fixed and rechecked.

                      Originally posted by steves View Post
                      The fact that they come on and off intermittently would make me suspect a short in the wiring harness.... but that would pop fuses.

                      Does your bike have the flash to pass button?

                      Does it have the flash to pass wiring?

                      Something must be coming loose occasionally....
                      My bike does not have the flash to pass button, as for the wiring...where would it be tied to? the headlights or the turn signals? I wouldn't think I'd have the wiring for flash to pass...but I could be wrong.

                      Originally posted by katanawarrior View Post
                      start simple -

                      -check grounds, all of them, 1 bad ground can mess up the troubleshooting process.

                      -Connections, sure you didnt miss any little connections? something corroded?

                      -Relays, I dont know much about the kat wiring harness really, but I did have a v65 magna that the headlight relay would show continuity, and would work after a while, but when the bike was cold it wouldnt work. If it got jarred around, or if it had time to warm up with would work. The solder points become loose on them, and the restitance or heat that would build up from it bieng loose, melts the solder ever so slightly to make a connection like how you say it will come on mid ride , then go off after you cut the key off, i was having the same problem. If it doesnt have relays, just stick with the basics, grounds are apparantly a huge problem in motorcycle wiring do them bieng open to the elements, exposed to huge amounts of vibration , etc.


                      Hope that helps some.
                      How exactly does one check the grounds? Is it just a visual inspection? Don't all grounds on the Kat run to the battery? I just think that if it was a grounding issue, I'd be having more problems with just the headlights?
                      1999 Black Katana GSX-600F

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                      • #12
                        I had the same problem twice on my 05 but it turned out to be a loose solder in the right pod the first time and the scond time it was my starter button sticking in a little, which would cut the power to my headlight since they wired it so the headlight turns off while you start the bike. Can't really help you on this one, good luck, cause I know it's a pain in the a#$.
                        R.I.P. Marc (CyberPoet)





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                        • #13
                          As for the grounds.. Follow your negative battery cable and see where it bolts too..

                          Yep, the motor, which is aluminum and its a pain in the arse to get to it, So to answer the question, no, the grounds dont go to the battery. Not directly anyhow.

                          As for checking them, unbolt/screw them and see if theres any corrosion going on between them and the bolts.
                          If its not broke, Hit it with a bigger hammer and blame it on cheap imports

                          RIP Dad 3/15/08 Love and miss ya already




                          Originally posted by Nero
                          Even I played for a minute or so, then I recovered what little manhood I had left and stopped.

                          Comment


                          • #14
                            Originally posted by katman05 View Post
                            I had the same problem twice on my 05 but it turned out to be a loose solder in the right pod the first time and the scond time it was my starter button sticking in a little, which would cut the power to my headlight since they wired it so the headlight turns off while you start the bike. Can't really help you on this one, good luck, cause I know it's a pain in the a#$.

                            That was my next thought... does the 98+ cut the headlight when the starter is depressed?
                            -Steve


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                            • #15
                              Originally posted by steves View Post
                              That was my next thought... does the 98+ cut the headlight when the starter is depressed?
                              I believe its only the 05-06 models, but I could be wrong...I haven't taken the right pod apart yet cuz I don't think a '99 has that feature.
                              1999 Black Katana GSX-600F

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