Question about 1985 kawasaki KE 125

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What is the power wire that comes from the voltage regulator to the coil.

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Should be the white wire on the end of the harness

Posted on May 30, 2010


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Charging 23 hp briggs engene will not charge

have you have checked the voltage coming from the charging coil? unplug the wire coming from the regulator and use a multimeter to check the voltage. if its not getting a charge from there then you will need to replace the cgarging coil which is under the flywheel

Jun 22, 2014 | Briggs & Stratton Garden

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Hi iam using bajaj avenger , i just change the battery two time ,but after each month the battry not use , can anyone tell me what may be the problem

there is a stator coil under the cover that charges the battery...usually, wires come out of the stator and then go into an electronic device called a rectifier/regulator...this device rectifies the ac voltage coming from the stator into dc to charge the battery..this device also regulates the voltage to around 13.8 volts so that the battery does not get damaged by overvoltage you get when you rev the engine...the regulator looks like a metal box with heatsink fins on it...if you can obtain a voltmeter. check the battery voltage while the bike is should get a reading of 13.8 - 14.4 volts if the stator and regulator are working..if not, then you will need to determine if the stator coil is bad or if it is just the regulator

Jun 10, 2011 | 2007 Bajaj Bajaj Avenger

1 Answer

While riding the bike shuts down like when you turn off the ignition, it lasts just seconds and comes back to life..

Hi There,
9 out of 10 times it is loose battery terminals, corroded terminals. - Clean and tighten.

Test your volatge regulator by attaching a voltmeter to you battery:
With bike off battery meter should read 12.50 +/- .25 volts - anything lower-battery needs charge
With Bike on at idle meter should read 12.80 +/- .25 volts - anything lower-voltage regulator bad
Rev to 2000 rpm meter should read 13.75 - 14.80 volts - anything lower-voltage regulator bad

Before replacing the voltage regualtor make sure the groung wire from the voltage regulator is tight and recheck with the meter.

Check your ignition wire screws, one may have vibrated loose. - Inspect / check for tightness
Check that wires connected to coil are tight .

Most of the time its just a loose connection. Find and tighten.

Dec 03, 2010 | Harley Davidson FLHTCUI Electra Glide...

1 Answer

We have a trike with a 1450 cc S&S motor. I have selected a bike below but it is not correct as this trike is not listed. It stopped running all of a sudden while riding. The battery was...

The regulator has nothing to do with the bike not running. Matter of fact, you can disconnect it at the engine case or the battery, it makes no difference as long as it's not shorted and drawing current.

To test the coil, leave the hot end of the coil connected and disconnect the end going to the sensor. Now, using a bare wire connected to the sensor end of the coil, momentarily touch the wire to ground. When you release the wire from the ground, you should see a spark at the plug. Or you can measure the coil's resistance with an ohm meter. When you measure the resistance of the coil from one small connector to the other, take all the wires loose. Put your meter's function switch in "OHMS, R X 1" position. Your coil should measure between 2 and 3 ohms, something like 2.72 ohms or so.

If you have voltage going to the coil, and the coil is good, but still no voltage, your ignition unit is probably shot. Since you have an S&S engine, no telling what type of ignition unit you have on it. Whatever took out the battery probably took out the ignition unit as well.

When you get the bike back running, I'll tell you how to test the regulator and the alternator on the engine.

Good luck

Aug 16, 2010 | Harley Davidson XLS 1000 Motorcycles

1 Answer


The armature (rotating field) is powered by the voltage regulator for 'excitation' which is the term describing a magnetic, revolving field. This magnetic field 'induces' voltage into the stator windings (stationary outer winding), producing voltage for use at the recepticles. Some older generators used a 'permanent magnet field, instead of using a powered winding from a regulator and the voltage and frequency were set by the RPM.
Frequency is still a function of RPM, but the voltage is controlled by the voltage regulator.

If you need further help, I’m available over the phone at

Aug 28, 2009 | Electrical Supplies

1 Answer

Battery not charging 2003 triumph rs any ideas wear to start to solve problem have replaced battery

check for charging system voltage to battery by testing for 13-15volts dc across battery posts w/ multimeter while bike is running.if less, check for ac voltage to regulator/rectifier w/ multimeter while bike is running.if there is voltge to module, it is most likely defective.if there is no voltage to module,follow wire loom from voltage reg. to electrical connector plug.unplug it, start bike, test for ac voltage at other side of connector on the electrical pins on the loom coming from the engine. if no power there, the charging coil, or the wiring from the coil is defect.

Feb 20, 2009 | 2002 Triumph Sprint RS

1 Answer

Voltage regulator on '02 Buell Blast

I don't have a manual yet so if anyone can offer any advice or point me toward an online wiring diagram or somethingI did it by ruling out my stator - knowing the rest - meaning plug wires and coil are good, check the connection of the regulator to the stator for elecrical flow at those two pins on the regulator side - there should be zero on both - current should only come from the stator, not to it - other wise you have bleeding - thus the regulator is bad - under your body above the rear tire on the left side you'll see a metal waffled box with wires heading out of it - thats the regulator,,,

Nov 10, 2008 | 2008 Buell Blast

1 Answer

Electrical problem

Sounds more like electronic ignition switch. Coil or voltage regulator would display loss of power during acceleration, power surges (fuses blown).

Nov 07, 2008 | 2000 Mercedes-Benz S-Class

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