As every XL owner should know the 74-78 has 3 seperate 6v circuits:

Points/coil
Head Light
Tail light, battery, gauges and brake light.

So this weekend was the first real-world use of the newly restored XL350.  Being a total beginner my wife road it very slow in second. She would often forget to turn off the trun signals.  I noticed throughout the day the neutral light would get harderand harder to see. By the end of the day it did not work at all. I checked the conection at the stator then took it for a ride up to 7,000rpm and was able to charge up the battery and get it back to normal.

The next day it behaved the same with her riding it.

Has anyone seen this? If you ride for an extended period at low RPM it drains down the battery like the stator output on that circuit is not keeping up?