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Enthusiast
07lx190(sold big mistake),09gts250,13bv350(sold),10lx190(pink)
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My gts250 has a headlight modulator. At idle the headlight modulates fine . When I drive it or rev it on the center stand ,the headlight will stop modulating and then go dark and then flash very slowly. I took off modulator and the headlight is fine when I rev it. My question, is it the modulator or could it be the voltage regulator or something else. The company that produced this has not seen a symptom like this before.
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Veni, Vidi, Posti
09 GTS (sold) 2014 NC700XD
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Posts: 5016 Location: Charlotte, NC |
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Veni, Vidi, Posti
![]() 09 GTS (sold) 2014 NC700XD
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Posts: 5016 Location: Charlotte, NC |
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It could be the voltage regulator. Check the voltage across the battery, it should not be above 13.7 volts with the engine revved.
For interests sake, who manufactured the modulator? I had problems with mine when I bought it, but they have been sorted. |
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2007 GTS
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Posts: 22822 Location: Harriman, Tennessee, Tn |
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with the modulator removed and it acts fine then its the modulator. but like it was suggested do an electrical volt test.
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![]() The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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Posts: 44567 Location: Pleasant Hill, CA |
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Midnight Rider wrote: It could be the voltage regulator. Check the voltage across the battery, it should not be above 13.7 volts with the engine revved. |
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Veni, Vidi, Posti
09 GTS (sold) 2014 NC700XD
Joined: UTC
Posts: 5016 Location: Charlotte, NC |
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Veni, Vidi, Posti
![]() 09 GTS (sold) 2014 NC700XD
Joined: UTC
Posts: 5016 Location: Charlotte, NC |
OP
Enthusiast
07lx190(sold big mistake),09gts250,13bv350(sold),10lx190(pink)
Joined: UTC
Posts: 86 Location: Cameron park ca |
OP
Enthusiast
07lx190(sold big mistake),09gts250,13bv350(sold),10lx190(pink)
Joined: UTC
Posts: 86 Location: Cameron park ca |
OP
Enthusiast
07lx190(sold big mistake),09gts250,13bv350(sold),10lx190(pink)
Joined: UTC
Posts: 86 Location: Cameron park ca |
UTC
quote
Checked the voltage at 3000 to 5000 rpm and it read 14.40 volts , so it must be the headlight modulator. The battery was at full charge when I tested. Thanks for the help.
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Veni, Vidi, Posti
09 GTS (sold) 2014 NC700XD
Joined: UTC
Posts: 5016 Location: Charlotte, NC |
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Veni, Vidi, Posti
![]() 09 GTS (sold) 2014 NC700XD
Joined: UTC
Posts: 5016 Location: Charlotte, NC |
UTC
quote
I have no knowledge about Kriss, I know the company I bought mine from said the electrical circuit was extremely noisy and they needed to adjust the hardware some to make it work properly on the Vespa they had in to test it on. It's been flawless ever since
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Moderaptor
![]() The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 44567 Location: Pleasant Hill, CA |
UTC
quote
If it is noise on the 12V line then a 100µF and a 0.1µF in parallel across the 12V as close as possible to the modulator might do the trick.
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Enthusiast
07lx190(sold big mistake),09gts250,13bv350(sold),10lx190(pink)
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quote
Jimc how would I go about doing that? What is a 100u ? I have the same modulator on my lx190 for 4.5 years and it is fine. I'm pretty sure the modulator was working ok on the GTS for 14 months prior.
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Moderaptor
![]() The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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Posts: 44567 Location: Pleasant Hill, CA |
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quote
valval wrote: Jimc how would I go about doing that? What is a 100u ? Quote: I have the same modulator on my lx190 for 4.5 years and it is fine. I'm pretty sure the modulator was working ok on the GTS for 14 months prior. |
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