The three white wires come from the stator. I'm not sure what your specs are but I have found that if they are all the same and close to spec things should work.
You also have a set of field coils. These are mounted inside the rotor. The field coil creates a very strong magnetic field around the rotor. On the rotor are fingers of a sort. As the rotor spins these fingers effect the magnetic field and this changing magnetic field is what excites the stator into producing power.
On the stator you use the lowest ohm scale on your meter. Now before you test the wires touch the probes on the meter together. This is needed on very low ohm readings. Get above about 10 ohms it don't matter. You will get a small ohm reading. This is the ohms of the test leads. Now touch the wires. test as three sets of two.
On my meters one's leads check out at .7 ohms, the other at .1 ohms.
Now lets say when you test the wires you get 1.3 ohms. You then take the first reading of the probes and subtract it from the test reading to get the actual ohms. On my .7 ohm meter, 1.3 - .7 = .6 ohms. See how that works.
Now do all three. There is another test you need to do. Set the meter to a higher scale, like 20k ohms or 20,000 ohms. Test from the wires to the steel body of the stator. You should get an infinity reading, no continuity.
On the field coil do the same, you only have two wires there so it's easier, test the wires then test from wires to ground.
Report back all these readings.
Leo
