Originally Posted by
Jipe
A better front light would be the SON Edelux II that has a On/OFF switch and also an automatic ON/OFF system with a light sensor. Note that the Supernova rear light work only with a Supernova front light, it requires the rear light output of a Supernova front light and cannot be connected to a hub dynamo output directly, so changing the front light for another brand than Supernova requires to also change the rear light.
I think supernova rear light should not be an issue to use with Edelux II. You don’t need to power it from the hub as Edelux II has rear light connection and rear light is connected to and powered through Edelux II and not hub dynamo. Light sensor and on/off switch will switch on/off both front and rear lights.
Once I’ll get the bike and show it to my mechanic I will have understanding of what Shimano hub / cassette choices I have locally. I will then post results here to get comments from community.