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Purchasing and installation of LED voltage meter

Discussion in 'The Garage' started by XS650D, May 23, 2019.

  1. XS650D

    XS650D XS650 Junkie

    I need to install one of these LED voltage units.I have read some posts and it looks like
    the 3 wire unit is preferable because of voltage kickback. Can anyone advise as to the
    best size and led colour that will work or fit correctly for a stock 77 housing .I want to use the brake light
    red lense section for the install as its no longer being used ( bypassed it long ago )
    Looks like approx 4 or 5 different colours available.Has anyone played around with what led colour works best thru the red lense . Thx for any guidance on this mod.
     
    Jim likes this.
  2. 650Skull

    650Skull Dinosaur Lives Top Contributor

    here's a link to 5Twins thread ............i remember another member cut the red lens out and used the voltmeter face or such. Didn't bookmark it

    http://www.xs650.com/threads/77-79-standard-in-dash-voltmeter.49689/#post-510205

    Another thread with some good ideas
    http://www.xs650.com/threads/nifty-little-voltage-monitoring-doo-dad.27642/

    And another type that could be installed in the rev counter with a bit of mucking around, (can provide some info on how to if you think its worth a try), need to get into the gauge to do it.
    http://www.autospeed.com/cms/A_113051/article.html
    https://www.ebay.com/sch/gammatroni..._DefaultDomain_3&rt=nc&_trksid=p2047675.l2562
     
    Last edited: May 23, 2019
    YamadudeXS650C, Jim and Mailman like this.
  3. XS650D

    XS650D XS650 Junkie

    Thx Skull much appreciated
     
    Jim likes this.
  4. Superjet

    Superjet XS650 Junkie Top Contributor XS650.com Supporter

    Hi XsD what do you mean by voltage kickback? I have a simple 2 wire led meter.
     
    Jim likes this.
  5. Superjet

    Superjet XS650 Junkie Top Contributor XS650.com Supporter

    This is what i have.

    20190523_211402.jpg
     
    Jim likes this.
  6. XS650D

    XS650D XS650 Junkie

    When the bike is turned off there is still voltage created from rotor for a few seconds
    because of the design and this can feed back and fry the LED .Some thing to that nature
    I read on a old post.Apparenty the 3 wire design will solve that problem.BUT I have not
    tested this theory so cant confirm or deny if this is correct.It looks like 5Twins LED is a 2 wire
    design and I haven't read of any issues with his.Maybe its got a built in safety so this cant happen.
    Regardless im going this route just cant decide on colour. If I could find or make a smoked lense
    to replace the red lense I believe that would be the ticket! Another member accomplished this
    and it looked great ,very legible in daylight .
     
    Superjet and Jim like this.
  7. gggGary

    gggGary Stop that! Top Contributor XS650.com Supporter

    Gotta use red behind a red lens the other colors will not show at all. A bit of clear epoxy on the back of the lens, bed the LED into it works very well. The clear basically removes the diffraction grating effect on the back of the lens from the view.
     
  8. Jim

    Jim The thrill of victory and da agony of da feet. Top Contributor XS650.com Supporter

    Here's how I did it....

    MVIMG_20180214_172836.jpg
     
    Superjet and Mailman like this.
  9. gggGary

    gggGary Stop that! Top Contributor XS650.com Supporter

    I have several cheap chinese 2 wire LEDs installed on bikes and more I use for testing no failures yet.
     
    Superjet, Mailman and Jim like this.
  10. XS650D

    XS650D XS650 Junkie

    Thats cool Jim. I went to order the unit 5Twins has but no longer available unfortunately.
    Anyone know another unit that will fit the same ,ifs have a link would be great.
    Thx for the tips Gary
     
    Jim likes this.
  11. Jim

    Jim The thrill of victory and da agony of da feet. Top Contributor XS650.com Supporter

    Mailman and gggGary like this.
  12. gggGary

    gggGary Stop that! Top Contributor XS650.com Supporter

  13. XS650D

    XS650D XS650 Junkie

    Thx Gary. I guess the unit 5T got was water proof sealed unit looks like but this will work !
     
  14. gggGary

    gggGary Stop that! Top Contributor XS650.com Supporter

  15. TwoManyXS1Bs

    TwoManyXS1Bs BBQ Hunter Top Contributor

    Ditto. Do a forum search on "diffuser".

    And, here's that "inductive kickback" thing...

    http://www.xs650.com/threads/alternator-rotor-inductive-kickback.42605/

    It's not an issue if you're running a later solid-state regulator...
     
    Jim and gggGary like this.
  16. gggGary

    gggGary Stop that! Top Contributor XS650.com Supporter

    TwoManyXS1Bs and Jim like this.
  17. 5twins

    5twins XS650 Guru Top Contributor

    17,188
    6,430
    688
  18. 5twins

    5twins XS650 Guru Top Contributor

    17,188
    6,430
    688
    Gary, do you have the clear epoxy on the back of the lens in your pic, because it seems to show through better than mine. Also, is that a waterproof sealed unit like mine or one of those "open" type from the Banggood link?
     
    gggGary likes this.
  19. TwoManyXS1Bs

    TwoManyXS1Bs BBQ Hunter Top Contributor

    You fellas that have the older mechanical relay-type regulators, on bikes with the "headlights always on" feature, probably won't experience the destructive inductive kickback reverse voltages, since the low-resistance lighting system would bleed off most of that pretty quickly...
     
    gggGary likes this.
  20. gggGary

    gggGary Stop that! Top Contributor XS650.com Supporter

    open one from bangood, yes I think that one is "potted" in clear epoxy. But Resto went to her new home yesterday,
     

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