Headlights blowing out on my 99 vfr

Discussion in '5th Generation 1998-2001' started by tmaisons, Aug 17, 2011.

  1. tmaisons

    tmaisons New Member

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    I have a a 99 vfr and a little while ago I was riding and the headlights (low beams) flickered then turned off so I switched to my high beams and after about 4 seconds they flickered and turned off also. Turns out the lights blew and I just figured it was the H4 bulbs because I've had them a couple years so I replaced them about 2 weeks ago and just tonight they blew again but this time my right side front running light went out also but the blinker still works. I have no idea what the issue is and not much experience fixing these kinds of things on vehicles. Anyone have any ideas why this is happening and what I can do to fix it?
    :chaingun:
     
  2. rccaulfield

    rccaulfield New Member

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    Thats weird, first thing i'd look for is a chaffed wire/loose connection/bad earth leading to the headlights-rule out the sidelight as a possible coincidence unless it goes again imo!
     
  3. danny_tb

    danny_tb New Member

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    Sounds like the rectifier/regulator (AKA: RR) is on its way out (halogen globes are the first things to blow). It's a good idea to check the voltage output (as per the Honda workshop manual). If it's letting the voltage go too high, do a search for yamaha R1 RR. I've done the mod and it works well.

    On the other hand, do a web search for "vfrness" (it's a VFR charging circuit wiring harness), and buy their harness and RR: more thorough modification, and just as reliable (maybe more reliable because of the new harness).

    Don't wait until the RR goes completely because it will leave you stranded, and it could burn out your wiring: it's an urgent job if you're blowing globes so quickly.

    On the other hand, you might've mis-handled the globes before putting them in (probably not, but just a possibility)...

    Good luck!
     
  4. FoothillRyder

    FoothillRyder New Member

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    I'd put my chips on the R/R as well. The voltage getting to the lights is higher than they can tolerate. Check the battery (if it's not a sealed unit), you may find it has boiled out some of the electrolyte. If that's true, you no doubt have an R/R issue.
     
  5. OTTOMAN

    OTTOMAN New Member

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    +1: RR culprit.
     
  6. camo

    camo New Member

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    The good news is that your alternator is putting out electricity.

    I would park it until fixed. You risk burning out other electronics on the bike. If you must ride it unplug the yellow wires that come from the alternator to the Rectifier/regulator.
     
  7. tmaisons

    tmaisons New Member

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    Update to my original post

    I also spoke to a guy at the honda dealership and he said it may also be a stator problem then suggested I test the voltage when I rev the engine. I tested the voltage and it goes up to about 16v then overloads. I did replace the RR in 2007 when I bought the bike because it did die on my way home right after the purchase. Do you think the RR could bad that quickly also how do I test to find out which component is bad?
     
  8. karazy

    karazy New Member

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    Due to its physical limitations, the stator is incapable of causing an over-voltage problem. After the rectifier changes the AC to DC, the output level is soley controlled by the regulator. Unfortunately, any electrical device can die at anytime, for no apparent reason. That is the price we pay for technology.


    :crazy:
     
  9. ridervfr

    ridervfr Member

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    16 is too high me thinks...14.5 or so is dah sweet spot i thinks
     
  10. tmaisons

    tmaisons New Member

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    Actually that's a good thing cause the RR is much cheaper haha :)
    Thanks for the help.
     
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