Front turn signal buzzer. Just leave it.
It tells you in the Clymers workshop manual wiring diagram.
Brown is tail light The extra brown in the bucket is for a small bulb that is not used in the USA.
Blackhole don't believe every thing you read people do make mistakes as do I. Buzzer has a black ( hot with key on ) and a brown with blue tracer.
@ lucky maybe Clymers has a missprint
I don't have one. I like the Honda factory service manual.