weird highbeam problem

Jo Rhett jorhett at
Tue Mar 29 22:44:38 PDT 2011

So tonight the highbeam was randomly working again, and for the first time in my experience it cut out while I was using it.  Seems like some component is overloading and failing to carry current.   Still have no clue which component is failing, since the switch is working, the bulks are tested good/swapped...

On Nov 22, 2010, at 10:05 PM, Jo Rhett wrote:
> Testing with DC 20 I saw positive 11V across the switch in the normal position.  When I flipped to highbeam the voltage reversed to -11V.  Makes sense that it's a polarity reversing switch, and that means it's good, yeah?
> I traced all the way back through the exposed connector blocks and every one confirmed the same voltage on each side, so it doesn't seem to be a failed connector (Andy's reported problem).
> And finally I replaced all of the light hardware with the front end off of my '02 sv650 (which is now a racebike) and that shows the same problem.  So is it down to being inside the front panel display?  Or where else should I check?
> On Oct 4, 2010, at 3:11 PM, Wade Bartlett wrote:
>> It the bulbs don't seem to be the issue, and you're not blowing fuses, how
>> about the switch itself? If the little pieces in there are goofed up such
>> that they don't make solid enough contact each time, you may be getting a
>> "no circuit energized" condition when you select HIGH.  That's where I'd
>> look. Peace. -Wade Bartlett, lurker.
>> -----Original Message-----
>> From: Jo Rhett
>> Sent: Monday, October 04, 2010 5:44 PM
>> On my street '01 sv650s I've got a weird problem.  If I turn on the
>> highbeams, the headlights turn off entirely.  (like if I do this at night, I
>> lose all light)
>> Symptoms:
>>  Headlights are unaffect, just when I put on highbeams
>>  When it happens, the blue highbeam light does not light (only way I know
>> in the daytime)
>>  Fuse is fine.
>>  I have swapped all of the bulbs involved at this point, and the problem
>> still keeps reoccuring.   I never know for sure if it is solved because it
>> usually works after swapping bulbs.
>>  This comes and goes.  It worked normally for 2-3 months and I thought the
>> problem had disappeared, but reappeared last night on a late night Highway 9
>> trip.   It seems to stay in one state or another for at least a week.  This
>> has been going on for about 2 years now.
>> Is there anything else I should check or swap?
> -- 
> Jo Rhett /  velociRaptor Racing
> #553 WERA

Jo Rhett /  velociRaptor Racing
#553 WERA / AFM

More information about the SV650 mailing list