Put a cool Voltmeter on my 2002.
At first I wired it to the turnsignal wire in the headlight bucket as some have done on this site.
The voltage drop was almost 2 volts, so I connected it to the left ign coil and it works great.
I get 14+ volts at any rpm.
Once in a while, after riding quite a while and I have my lights on, I will see the voltage drop to 13 or so at low rpm, then it will come back up again with some higher rpm.
I just got this bike a while back and it looks like the stator has been replaced cause there are a few scratches on the engine cases.
When I re-set the air gap on the pick ups, I was happy to see that the stator looked like brand new......no signs of any heat damage.
I re-located the r/r and it looks original.
Should I worry about the slight voltage drop? It only happens for a few seconds.
BTW the PO just installed a new Yuasa battery but it's liquid type.