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Old 11-16-2015, 06:08 PM   #6
kz1000st   kz1000st is offline
 
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Join Date: Oct 2008
Location: Hyde Park, NY
Posts: 1,067
If it's making power, and it is, you have to start testing the wiring back to the battery and the voltage regulator. Somewhere power is being interrupted. 12.8 isn't great but if there's more power when the bike is running your alternator should be OK. It sounds like there's a break in the wiring and the only way to find out where is tracing the wires and checking for power along the way. Look at places where the wiring could rub. So many times it's around the handlebars.
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2008 Eagle Milano 150- 9,679 miles
2009 Honda Rebel 250- 10,434 miles
2009 CF Moto Fashion- 16,023 miles
2009 MC-114 50cc Cub Clone- 4,317 miles
twowheeler.yolasite.com/

That's 30,049 China Scootin miles and Counting.
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