Alternator output

[M-L-M]

Does anyone know what the output should read on the 3 white wires from the alternator should be, I have .003 ohms on each pair when disconnected, when all connected and running it has fried 3 regulators, bike is running CDI unit from the battery could it the excess from not powering the CDI unit causing the problem.

[scottieh]

Here is some useful info from other members on the board.

This forum has a great search feature as a lot of these kinds of questions have been asked and answered before. Hope this helps!

There should be the same resistance to be measured between any of the white wires, and infinite resistance from any of the white wires to ground (all measured with regulator/rectifier disconnected).

Andy

The specs say between about .7 to 1.1 ohm between any of the 3 white wires from the stator windings which is almost short circuit. If you have a high resistance then you have a problem. When the bike is running and idling you should from memory have about 40V AC between each white wire that feeds into the voltage reg and will increase substantially when you rev engine. Yes the voltage reg needs to be earthed which it will be if it is bolted to the frame.

[donnybach]

Well said. Note, there is also a lead in the loom to go under the bolt for extra earth back to neg on the 1vj.
Let us know your progress.
Ps
Powered from battery? Which model is it? The older stator (1vj etc) with 3 whites have the red and brown supplying the cdi for spark.
If the readings are correct, there’s a short.
I have an aftermarket stator (electrex) which has lower resistance than standard, but almost no resistance is looking shorted. Are all components correct for model?