The alternator will show alternating current, I don't know the output off the top of my head. I also don't know if ours need to be energized or not , the old ones didn't on the 60s and 70s bikes. My guess is ours don't but that's all it is...a guess.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!