The problem is some how the wires from the stator to rectifier got fried i have removed the the cover and inspected the stator and ohms tested its fine so what the heck made the plug and rectifier fry??? im new to this bike and i got it as is so it seems that it has recently ben re wired by who had it before please if anyone can help i would be VERY GREATFUL THANKS Brian
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I will tell you something,
First you need to check all electricity connection for bad connection.
After if generator not working normal on the poles of the battery volts will permanently change need to change stator.
If you have a weak battery charge or over-charge then you can change regulator rectifier. Check all parts and after change damaged parts.
3) there may be damage that has caused this 2)doesnt matter which yellow wire 1)maybe fried regulator or stator coils or aged insulation which has allowed a short between windings
The three wires are the 3 poles of the stator windings,
Fix the wires and plug first(electronics shops will have suitable 3 or 4 pin plugs to use) get a multi meter and check resistance, any pair should have same resistance, non should short to ground. with the bike running they will produce AC current (maybe 50-60vAC)again any pair. If you are getting good AC voltace, then put the meter across the battery 12vDC engine stopped should rise to 14 vDC (about) when engine revved to 3000rpm
No AC -new stator No DC-new regulator Note voltages are estimates, many bikes run very similar charging systems
Locate the wire harness coming out of the stator on the left crank case cover of the motor and follow it to the plug with three yellow wires. This is the stator plug. You should have continuity between any combination of the three yellow wires, but no continuity between any of the yellow wires and ground. If the stator yellow wires are grounding you will have to replace the stator. To replace the stator remove the left crank case cover and unbolt the stator from the inside of the cover. Do not forget to purchase a new left cover gasket with the new stator or you will just delay your riding.
i have the same problem, The most likely problem is that your charging system is not working or your battery has a faulty or shorted battery cell.
The battery should be load tested at an auto shop or motorcyle dealer. This will verify if it is still okay. It must be fully charged to do a load test.
You can connect a multimeter to the battery terminals and see if the bike is charging. Speed the bike up to about 3000 rpm and see if the battery voltage is about 14 volts or slightly higher.
If the voltage is only the same as the battery or under 13 volts then the bike is not charging properly.
This could be a faulty alternator stator coil or a faulty regulator/rectifier unit.
The alternator stator connector is under the seat. It has a white connector with 3 yellow wires.
Unplug the connector and check the "AC" voltage between each set of yellow wires with the bike running fast idle.
Between any two yellow wires you should have 30-60 volts "AC" Also, none of the yellow wires should have any connection to ground. You can check that with the ohms setting on the meter.
If the stator voltage is low or none then the stator coil under the left engine cover will need to be replaced.
If the voltage is okay on the stator but not on the battery then the regulator/rectifier unit is likely faulty. There is no test, just replace it if the stator voltage is good and the battery is good.
To check for a drain just remove your negative battery cable and put a test light between the battery and the cable. If it lights up with the key off, that is a drain. Pop fuses until it goes off to find the troubled circuit.
Locate the wires coming out of the motor. There is a plug with three yellow wires, check the three yellow wires coming out of the motor for continuity. Any combination of the three yellow wires should have continuity. But there should be NO continuity between any of the three wires and ground. If any of the yellow wires are grounded you have a bad stator. If the stator checks good you probably have a bad voltage regulator/rectifier.