ukdave
Parking Attendant
Posts: 7
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posted July 22, 2007 12:26 PM
zx12 intermitent charging
Hi Guys, new to site. lots of good info, help a limey out. My 12 has intermitent charging troube. (ie will run battery flat, but when i test out put at white wire on battery tray i have 14volts) fitted new battery and ok for a couple of weeks. i have no alam and the only gadjet is usd commander.
any help gratefully received
  
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shiggsy
Expert Class
Posts: 128
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posted July 25, 2007 01:40 AM
Regulator\Rectifier might be on the way out or you Stator might be failing. If you haven't got a manual you can download one, it has procedures for checking these items.
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ridgeracer
Pro
Posts: 1309
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posted July 25, 2007 01:52 PM
Given all the trouble people have had with melting alternator connectors I would start there. These bikes were leaking oil through the alternator cable. Besides being a rear wheel oil hazard it also seeped into the connector causing the connections to increase their resistance and heat up under load eventually toasting the connector.
There are three wires and if any one fails you will still get voltage out of the rectifier/regulator into the battery but you will only have 1/3 the normal current.
In the US the first sign of this was usually the mysterious headlight failure. The headlights are always on on the US models but to give the bike more starter power when you first turn on the key the headlights are off. The circuit monitors the voltage on one of the three alternator wires and when the engine is spinning fast enough to generate voltage it turns on the headlight relay. When the alternator connector goes bad the headlight relay never gets the signal to turn on.
There are three wires and if any one fails you will still get voltage out of the rectifier/regulator into the battery but you will only have 1/3 the normal current.
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ukdave
Parking Attendant
Posts: 7
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posted August 02, 2007 12:33 PM
thanks will check the regulator connections, ohh the wires do seem a bit brownish and soft. best start there
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maddfayce
Novice Class
SARR SGT@ARMS
Posts: 47
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posted November 05, 2009 03:46 AM
Ok, I have new regulator, stator, and battery with no headlights and not charging the battery. Any ideas?
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jeremy_kokwk
Expert Class
Posts: 161
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posted January 07, 2010 08:34 PM
did you check all the wirings? maybe it gt spolit over time ............. cheers ....
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Texas12R
Zone Head
Posts: 545
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posted January 08, 2010 09:54 AM
On the other site, Kaw12 bought a ricks stator... Turned out
to be bad... they had obviously had several issues
because they refunded his money ...
So if you have an aftermarket... I would look there first
your results may vary 
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