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Old 06-01-09, 12:14 PM   #1
thor
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Default Why do my lights get brighter when I rev the engine?

Perhaps the battery is on it's last legs? I have some heated grips on, but that's it.

Also, The top half of the brake lights are dimmer than the bottom half. They also get dimmer when the indicators are on.

Any help gratefully received as always...
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Old 06-01-09, 12:17 PM   #2
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Default Re: Why do my lights get brighter when I rev the engine?

I think it is a good thing, that's the test to see if the alternator and reg/rec are charging the battery.
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Old 06-01-09, 12:20 PM   #3
SoulKiss
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Default Re: Why do my lights get brighter when I rev the engine?

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Originally Posted by thor View Post
Perhaps the battery is on it's last legs? I have some heated grips on, but that's it.

Also, The top half of the brake lights are dimmer than the bottom half. They also get dimmer when the indicators are on.

Any help gratefully received as always...
Which year do you have?

I believe that pre-k5 (or k6) pointies have a problem with the Rear light unit......
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Old 06-01-09, 12:21 PM   #4
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Default Re: Why do my lights get brighter when I rev the engine?

It's MAGIC
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Old 06-01-09, 12:25 PM   #5
Stu
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Default Re: Why do my lights get brighter when I rev the engine?

sounds fine to me
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Old 06-01-09, 12:26 PM   #6
Ceri JC
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Default Re: Why do my lights get brighter when I rev the engine?

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Originally Posted by SoulKiss View Post
Which year do you have?

I believe that pre-k5 (or k6) pointies have a problem with the Rear light unit......
Yes, my K4 had a dodgy rear light unit. It was very subtle (possibly would of passed an MOT even), but one of those things that once you noticed, couldn't help seeing. A replacement unit fixed the problem.
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Old 06-01-09, 12:49 PM   #7
thor
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Default Re: Why do my lights get brighter when I rev the engine?

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Originally Posted by Warthog View Post
I think it is a good thing, that's the test to see if the alternator and reg/rec are charging the battery.
Ok, I'm guessing a search will help here...?

Quote:
Originally Posted by SoulKiss View Post
Which year do you have?

I believe that pre-k5 (or k6) pointies have a problem with the Rear light unit......
K4 - I see

Quote:
Originally Posted by BigApe View Post
It's MAGIC


Quote:
Originally Posted by Ceri JC View Post
Yes, my K4 had a dodgy rear light unit. It was very subtle (possibly would of passed an MOT even), but one of those things that once you noticed, couldn't help seeing. A replacement unit fixed the problem.
Was that the only reason you replaced it? Was it expensive?

Thanks!
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Old 06-01-09, 01:44 PM   #8
shifter
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Default Re: Why do my lights get brighter when I rev the engine?

It's not a good thing. the regulator does exactly that, regulates the voltage. If your lights get brighter with the throttle then it's on its way out and will probably take the battery with it.
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Old 06-01-09, 01:48 PM   #9
Dave20046
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Default Re: Why do my lights get brighter when I rev the engine?

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Originally Posted by shifter View Post
It's not a good thing. the regulator does exactly that, regulates the voltage. If your lights get brighter with the throttle then it's on its way out and will probably take the battery with it.
Really?! Everybike I've ever owned has done this.
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Old 06-01-09, 01:48 PM   #10
Lozzo
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Default Re: Why do my lights get brighter when I rev the engine?

It's a sign from god that you are the new messiah. You should form your own cult religion based on nudity and free love.
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