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Cbf 125 headlight trouble!!!

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Leepreston201...
L Plate Warrior



Joined: 04 Oct 2015
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PostPosted: 19:12 - 21 Oct 2016    Post subject: Cbf 125 headlight trouble!!! Reply with quote
Hi i have a 2011 honda cbf 125
The problem im having is i start the bike up light comes on till few mins down the road it dims main beam and full beam'
Its brightens up when i apply back brake
Or i use turn signals but flashes bright/dim
I have cleaned and earth points.
New battery
New bulb
And info will be greatfull thanks in advance
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Ĺ.preston
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jaffa90
World Chat Champion



Joined: 06 Apr 2016
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PostPosted: 20:06 - 21 Oct 2016    Post subject: Reply with quote
Is the battery being charged when the engine goes faster?
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Leepreston201...
L Plate Warrior



Joined: 04 Oct 2015
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PostPosted: 20:25 - 21 Oct 2016    Post subject: Reply with quote
I can only presume so i travel 30+ miles to and from work batterys never died ill have to rev it up with a multi meter to test this will that work
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Ĺ.preston
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Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
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PostPosted: 20:34 - 21 Oct 2016    Post subject: Re: Cbf 125 headlight trouble!!! Reply with quote
Leepreston2015 wrote:

Its brightens up when i apply back brake
Or i use turn signals but flashes bright/dim
I have cleaned and earth points.


I still think the earth is at fault. temporarily add a second earth by putting a wire directly from the battery and to the eath on the headlight bulb (by pushing the socket over the temp wire onto the end of the bulb)
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050
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nowhere.elysium
The Pork Lord



Joined: 02 Mar 2009
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PostPosted: 20:43 - 21 Oct 2016    Post subject: Reply with quote
The entire lighting circuit uses a shared earth line, so check the earth as exhaustively as you can. The lights on a CBF are pretty crappy though - they're AC as well, just to make life that little bit more entertaining.
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'10 SV650SF, '83 GS650GT (it lives!), Questionable DIY dash project, 3D Printer project, Lasercutter project
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