[cardoza]

Thanks for the input once more! here there are some results: with positive to ground,

The cranking of the motor felt different and the car started sooner (go figure), the cranking seems smooth and less noisy!!!

I did not ground the generator, however it was entirely disconnected and I hope it did not get damaged, because there is not excitation current going to it ..
I do have the can type regulator and will try to re-polarize for a quick test

(of course if the generator have magnets inside then I'll say it is fried)...