This headlight cannot be connected to the light output of the motor because it does not allow enough power. In addition, the daytime running light would then only light up when the light on the e-bike is switched on. Therefore, the headlight is connected directly to the battery output. This does not affect the motor and, in my opinion, the warranty is not affected.

No. Yamaha only has 6 V . You can mount it but you need for example a Bts 432 e. Then you have to solder and have knowledge. The supernova m99pro is the best headlight in my opinion. Mount at your own risk

No, a bracket is not included. I used a Ritchey stem with a matching mount. Elegant and compact: https://www.bikester.ch/ritchey-universal-stem-mount-supernova-vorbauhalterung-c2204-axis44-vorbauten-schwarz-903750.html

Yes, everything you need is included, but be careful with the small plugs, mine broke off.

No, the product is intended for operation on the motor/battery of the e-bike and must be connected to it.