LED brake light flasher unit
As in brake light and indicators?
Yep. A unit attached to the brake light wiring which flashes some LED strips but not the standard brake light (or the indicators).
The two white wires are for configuration. Connecting them for <1sec or >1.5sec changes settings.
Also: TEENY TINY
I plan to do something similar on the front of the bike with white LEDs hooked up through the horn button.