Originally Posted by
samkl
Mystery solved! Sort of. It’s the light. I connected another dynamo light to the fork, at Hampsten’s suggestion, and sure enough, when I spun the wheel it worked.
I assume this is just a defective light? Like I said it worked for 1 day then kaput, which seems odd.
There is the chance that removing the light made the connection at the mount work again after for some odd reason it stopped working.
If you have another means to test the light unit, I would suggest you do so. I have tested dyno powered lights with a low voltage battery, but I am not familiar with your light so I can't make any suggestions how to without using a dynohub.