The Hey OK Brake
Light Controller with Head Light Output plugs in between your receiver
and ESC. When you power up your electronics, it self-calibrates and
turns on the brake lights. Give it some throttle in the forward or
reverse direction and the brake lights will glow dimly.
There is a second pair of pins that you can use to plug in your other
lighting like your head lights etc.
DOES NOT INCLUDE LEDs. You will need to provide your own LEDs with proper value resistors.
Max current for the brake light circuit: 300mA
Max current for head light circuit: Varies - based on max current from ESC BEC