Originally Posted by
steelbikeguy
yeah... I noticed that too, after I drew it out.
I did specify that it was a lousy drawing!
I thought it still made the point about the frame ground connections, but I'd hate to see someone use it as a guide to just power a tail light.
Steve in Peoria
Yes, your intentions were good.
Photo below, I picked up a cheap ($10) dynohub wheel at a bike charity and put it on my errand bike, Shimano so it is grounded to the fork. I had a D Lumotec headlamp sitting on the shelf, the headlamp was made for bottle generators, thus no switch and grounded to the mounting bolt. Simplest wiring job I have ever done, hub grounded to the fork, light grounded to the fork, so only a single conductor wire was needed.
Light is too low to light up the road very well, but it is my errand bike so it is only ridden on well light city streets. Mostly used as a to-be-seen light, not a light to see with.