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Thread: My speedo works but the LED display...

  1. #1
    Join Date
    13th May 2006 - 12:21
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    2002 KTM 640 Adventure
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    My speedo works but the LED display...

    Has disappeared. I have since found out by trying this on another KTM. My one doesn't work on the other bike either so it has eliminated the wiring issue I thought I had, it is now the LED display.
    Because the speedo sits inside a housing on the Adventure I need to replace it with something.

    The new KTM computer is $1018 approx NZD....
    If I bought it from the USA, same thing it would be $374.72 USD plus shipping..

    Who is making the money here?
    Anyway, has anyone had experience with the Vapor units and connecting issues if any? The shape of it looks perfect for the hole on the dash, I just need to find out the measurements...
    Afterall, I want a speedo, neutral light, high beam, indicators and the odometer and trip meter....I can't rely on the GPS all the time.
    The only thing missing would be the low fuel sensor and the oil light, i can live with out that, or use these and live without the indicator or something as Vapor provides 8 lights I think...

    The price would be approx $325, then I gotta get it wired, and If I am going down that track do I get the wires cut and the redundant connections thrown out?

    A small dilemma but would have been avoided if perhaps I stayed out of the sand puddles and didn't flip it occasionally in deep deep rock pools...

    I am only guessing that this was the reason, but it has taken a few months to surface and as I said, it works in the background when you hold your head a certain way. I could see the speed dimly....

  2. #2
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    28th July 2008 - 20:56
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    I've got a Vapor unit on my 640e, it's a great unit with all the functions you mention. Mine was installed by the previous owner but it's got a pertty simple loom (4 conectors for the main unit, 1 pair of wires for each of the 4 lighs on the add on dash).

    As for size, with the added dash lights its 140mmX65mm


    topo
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  3. #3
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    31st August 2008 - 20:27
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    Quote Originally Posted by NZKTM View Post
    The new KTM computer is $1018 approx NZD....
    If I bought it from the USA, same thing it would be $374.72 USD plus shipping..

    A small dilemma but would have been avoided if perhaps I stayed out of the sand puddles and didn't flip it occasionally in deep deep rock pools...
    I recall someone over in advrider.co talking about dunking his LCD speedo & having the same issue. Turned out he had some residual moisture in the speedo & got the screen back when he dried it out properly. I think he packed some silca gel in there to stop reoccurence.
    IT'S JUST BETTER WHEN THERE'S TWINS INVOLVED..
    My GS build thread is here
    My ride photos are here

  4. #4
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    2nd March 2004 - 13:00
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    Quote Originally Posted by topo View Post
    I've got a Vapor unit on my 640e, it's a great unit with all the functions you mention. Mine was installed by the previous owner but it's got a pertty simple loom (4 conectors for the main unit, 1 pair of wires for each of the 4 lighs on the add on dash).

    As for size, with the added dash lights its 140mmX65mm


    topo
    Oh shit! Yours is mostly blank too!

  5. #5
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    13th May 2006 - 12:21
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    Thanks...

    Quote Originally Posted by topo View Post
    I've got a Vapor unit on my 640e, it's a great unit with all the functions you mention. Mine was installed by the previous owner but it's got a pertty simple loom (4 conectors for the main unit, 1 pair of wires for each of the 4 lighs on the add on dash).

    As for size, with the added dash lights its 140mmX65mm


    topo
    From what you are saying then, it is almost a perfect size for width and a little light on the height which means it will fit mounted on the inside of the hole with a little head space....
    Many thanks for that! I might go down this track....

  6. #6
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    13th May 2006 - 12:21
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    Funny man Nordie....

    Quote Originally Posted by NordieBoy View Post
    Oh shit! Yours is mostly blank too!

    Yes, that is what mine looks like all of the time but it has a nice back light for ambiance when riding......

  7. #7
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    13th May 2006 - 12:21
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    Yes, I thought that...

    Quote Originally Posted by BMWRSNUT View Post
    I recall someone over in advrider.co talking about dunking his LCD speedo & having the same issue. Turned out he had some residual moisture in the speedo & got the screen back when he dried it out properly. I think he packed some silca gel in there to stop reoccurence.

    I took it out, took it apart and did the same. It was in three parts on the bench. I hooked it up in bits and it worked intermittently with a bit of coaxing, which made me think wiring. I left it in, rode and gradually it died over a ride to the non existent display. It still made me think wiring or broken wires, split or similar. Having put it on a 640e, it must be the speedo itself, or rather the LED part of it. Unfortunately I cannot just replace the one board or the screen, this is all a one piece unit joined by straps/bands like a hard drive and solder etc....

  8. #8
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    13th May 2006 - 12:21
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    Does it come on with the key?

    Quote Originally Posted by topo View Post
    I've got a Vapor unit on my 640e, it's a great unit with all the functions you mention. Mine was installed by the previous owner but it's got a pertty simple loom (4 conectors for the main unit, 1 pair of wires for each of the 4 lighs on the add on dash).

    As for size, with the added dash lights its 140mmX65mm


    topo
    Performs well and keeps the data when key is off etc, just like the real thing? The set up you have is perfect, high beam, oil, indicators, neutral.
    That is what I need....minimal.

  9. #9
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    Quote Originally Posted by NZKTM View Post
    I took it out, took it apart and did the same. It was in three parts on the bench. I hooked it up in bits and it worked intermittently with a bit of coaxing, which made me think wiring. I left it in, rode and gradually it died over a ride to the non existent display. It still made me think wiring or broken wires, split or similar. Having put it on a 640e, it must be the speedo itself, or rather the LED part of it. Unfortunately I cannot just replace the one board or the screen, this is all a one piece unit joined by straps/bands like a hard drive and solder etc....
    I gather no apparent cracks in soldered joints? Tried resoldering? Maybe cracks, which get worse with heat / vibration?
    IT'S JUST BETTER WHEN THERE'S TWINS INVOLVED..
    My GS build thread is here
    My ride photos are here

  10. #10
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    28th July 2008 - 20:56
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    sillyfuckntencharacterrule
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  11. #11
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    13th May 2006 - 12:21
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    While you are here....

    Quote Originally Posted by BMWRSNUT View Post
    I recall someone over in advrider.co talking about dunking his LCD speedo & having the same issue. Turned out he had some residual moisture in the speedo & got the screen back when he dried it out properly. I think he packed some silca gel in there to stop reoccurence.
    Not related but seeing you have the same machine. I am stumped...
    Can you tell me where this goes on the bike, I think it gathers the fuel cables or similar and is on the left side of the bike?
    I have the manual, the spare parts, photos of the bike but it isn't anywhere to be seen. My mechanic left it hanging when I picked the bike up a few months ago and want to put it back on, it secures somewhere...

    Have a look a tour bike and can you explain where please? many thanks.....Crazyfrog told me but I didn't understand fully..
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  12. #12
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    I will re-examine...

    Quote Originally Posted by BMWRSNUT View Post
    I gather no apparent cracks in soldered joints? Tried resoldering? Maybe cracks, which get worse with heat / vibration?
    They are so small, I don't even know which soldered parts are for the LED display.
    There are 14 wires that feed into this unit, these are all accounted for, so the LED must be fed off the unit somewhere inside. I am thinking the strap or one of them, but these are soldered in place not the usual plug in type.
    Thanks for the suggestion, I will have a look.

  13. #13
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    Quote Originally Posted by NZKTM View Post
    The only thing missing would be the low fuel sensor and the oil light, :
    They aren't connected to anything anyway.

    Clint

  14. #14
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    got a vapor in my katana... works really well...

    apart from the rev ounter... it goes up the shit sometimes bounes around...over reads...doesnt read at all etc....

    word on other forums is you put an inline resistor in...

    and it apparently fies it... the rev ounter wire for the atv kit has a resistor wire.... so see if they can swap it for one of those wires for ya.

  15. #15
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    Thanks for that

    Quote Originally Posted by skidMark View Post
    got a vapor in my katana... works really well...

    apart from the rev ounter... it goes up the shit sometimes bounes around...over reads...doesnt read at all etc....

    word on other forums is you put an inline resistor in...

    and it apparently fies it... the rev ounter wire for the atv kit has a resistor wire.... so see if they can swap it for one of those wires for ya.
    I might actually go for the Vector, which is the one without the rev counter. I have the rev counter on the bike already

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