XT600E electrics

Discussion in 'Classic Motorbikes' started by Rich B, Nov 18, 2008.

  1. Rich B

    Rich B Guest

    XT600E 1995, so sort of classic :)

    Leaving work to come home last night in the dark and pissing rain, it got
    100 yards up the road and stopped - engine and lights failed at the same
    time. Got back to it this morning, changed the main fuse, and it started
    fine. The old fuse fell to pieces when I took it out so I assumed this was
    the problem. So I got a lift back for it tonight (I've had to leave it at
    my workplace). It started fine again, but when I put the lights on - pop. Or
    rather - the headlight came on very dim, so I revved the engine. The
    headlight went brighter, and then the fuse blew again.

    Im guessing it's a short somewhere in the lighting circuit. If so, where's
    the best place to start looking? If I have to rip it apart and check
    everything, I will, but if there are any well-known failure points it would
    save me a lot of time. I know quite a few on this group have had the same
    model, so I hope someone will be able to point me in the right direction.

    Thanks all.

    --
    Rich B

    1971 S2a
    1995 XT600E
    2003 ST1300 Pan European
    Oh, and a Ford

    Take out the obvious to email me.
     
    Rich B, Nov 18, 2008
    #1
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  2. Rich B

    Rich B Guest

    Mark Olson typed:
    Thanks for this. It's not intermittent at the moment - when I switch on the
    lights, it blows - but I'll bear that in mind as a Good Trick. Headstock it
    is, then. Cheers. (I have to get the bugger home first, mind.)

    --
    Rich B

    1971 S2a
    1995 XT600E
    2003 ST1300 Pan European
    Oh, and a Ford

    Take out the obvious to email me.
     
    Rich B, Nov 18, 2008
    #2
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  3. I'd check the charging rate first. Then I'd have a look at the ignition
    switch - everything goes through there, and they corrode. The fact that
    the problem initially involved both ignition and lights suggests this
    may be the problem area.
     
    The Older Gentleman, Nov 18, 2008
    #3
  4. Using the patented Mavis Beacon "Hunt&Peck" Technique, Mark Olson
    <scribbles furiously>

    Why had I never thought of that?
     
    Wicked Uncle Nigel, Nov 18, 2008
    #4
  5. Rich B

    Pete Fisher Guest

    Because you have a multi-meter ?

    --
    +----------------------------------------------------------------+
    | Pete Fisher at Home: |
    | Voxan Roadster Gilera Nordwest * 2 Yamaha WR250Z |
    | Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" |
    +----------------------------------------------------------------+
     
    Pete Fisher, Nov 18, 2008
    #5
  6. Rich B

    Rich B Guest

    The Older Gentleman typed:
    My first thought was the ignition switch, as I had foolishly left the key
    in, while the area had about 2" of rain in an afternoon. The key stops the
    little shutter thingy from closing to keep the wet out, and I wondered if
    the switch had become waterlogged. Then I thought ... nah. But it's
    something else to check, ta.

    --
    Rich B

    1971 S2a
    1995 XT600E
    2003 ST1300 Pan European
    Oh, and a Ford

    Take out the obvious to email me.
     
    Rich B, Nov 18, 2008
    #6
  7. And I'm thinking... yeah.

    Water runs down the key into the switch.

    (Oh, the shutter thing is called an escutcheon)
     
    The Older Gentleman, Nov 18, 2008
    #7
  8. It'sa bloody good'un, isn't it? And there was me thinking Olson was
    another kSeptic who just relies on "change the black box if it doesn't
    work".....
     
    The Older Gentleman, Nov 18, 2008
    #8
  9. Rich B

    Pete Fisher Guest

    A very neat trick. Except that a mult-meter would more easily come to
    hand in my garage than an old car headlamp bulb (can't speak for WUN). I
    shall now keep one specially for such diagnostics.
    --
    +----------------------------------------------------------------+
    | Pete Fisher at Home: |
    | Voxan Roadster Gilera Nordwest * 2 Yamaha WR250Z |
    | Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" |
    +----------------------------------------------------------------+
     
    Pete Fisher, Nov 18, 2008
    #9
  10. Would it not cause the risk of a fire somewhere else, though, if the
    circuit is allowed to continue unbroken?
     
    The Older Gentleman, Nov 18, 2008
    #10
  11. Rich B

    Rich B Guest

    The Older Gentleman typed:
    Really? Apart from the heraldic meaning, I always thought an escutcheon was
    the plate *around* a keyhole. It is in cabinetmaking, anyhow.

    But yes - water running into the switch may be the culprit, although it
    seems to have left the ignition contacts unaffected. I shall deploy a
    hairdryer as a line of first attack. Thank you.

    --
    Rich B

    1971 S2a
    1995 XT600E
    2003 ST1300 Pan European
    Oh, and a Ford

    Take out the obvious to email me.
     
    Rich B, Nov 18, 2008
    #11
  12. Using the patented Mavis Beacon "Hunt&Peck" Technique, The Older
    It is. I expect I'll be seeing it in a magazine in the near future...
    Naughty. He's a very nice man.
     
    Wicked Uncle Nigel, Nov 18, 2008
    #12
  13. Rich B

    crn Guest

    Seconded.
    Remote diagnosis is difficult without a wiring diagram but ....
    The symptoms seem to imply that the battery is no longer connected and
    the lights are running from an unregulated generator. I would look at
    the battery and regulator connections first.
     
    crn, Nov 18, 2008
    #13
  14. Rich B

    Rusty_Hinge Guest

    The message <>
    That was my immediate reaction.
     
    Rusty_Hinge, Nov 18, 2008
    #14
  15. Rich B

    Guest Guest

    Followed by genuine WD40, which, as any fule kno is supposed to drive
    water off a steel plate.

    It is an anti-lubricant though, so a gobbet of engine oil or 3-in-1 down
    the keyhole thereafter might be good.
     
    Guest, Nov 18, 2008
    #15
  16. Rich B

    Steve Parry Guest

    Could it be that the headlight bulb filament has snapped inside the bulb and
    laying across the other filament and drawing twice the wattage and popping
    the fuse?


    --
    Steve Parry
    BMW R80RS, BMW R45, 03 BMW R1100S Boxercup, 07 K1200GT SE
    95 BMW F650, 87 Yamaha FS1, Sukida SK90PY, 91 Kawasaki AR50,
    07 VW Passat SE Estate for comfort
    www.gwynfryn.co.uk
     
    Steve Parry, Nov 18, 2008
    #16
  17. Oh, sorry, I thought you had some cover over the keyhole. You meant the
    tiny little plate inside the lock, didn't you? My bad.
     
    The Older Gentleman, Nov 19, 2008
    #17
  18. Rich B

    Rich B Guest

    The Older Gentleman typed:
    Heh - yes, a cover would indeed be an escutcheon in my book. My poor
    description.

    The little plate (what I called a shutter thing) closes the key slot after
    you take the key out. I assume on a bike it has an anti-rain function, and
    with the key in during a Biblical rainstorm, that may well be a factor. Day
    off work tomorrow - we'll see.

    --
    Rich B

    1971 S2a
    1995 XT600E
    2003 ST1300 Pan European
    Oh, and a Ford

    Take out the obvious to email me.
     
    Rich B, Nov 19, 2008
    #18
  19. Rich B

    Rich B Guest

    typed:
    It starts and runs fine, and the battery is firmly connected, but the lights
    being dim (a brown patch on a wall in pitch darkness) and brightening when I
    revved the engine indicate something is going direct to the circuit. I hope
    it's a short - I can fix those.

    --
    Rich B

    1971 S2a
    1995 XT600E
    2003 ST1300 Pan European
    Oh, and a Ford

    Take out the obvious to email me.
     
    Rich B, Nov 19, 2008
    #19
  20. Rich B

    Rich B Guest

    SpamTrapSeeSig typed:
    Aye, will do.

    --
    Rich B

    1971 S2a
    1995 XT600E
    2003 ST1300 Pan European
    Oh, and a Ford

    Take out the obvious to email me.
     
    Rich B, Nov 19, 2008
    #20
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