What it does
With the Brake Lights function enabled, the Nexus switches the brake light output itself. That's common in race cars and full rewires where the factory lighting circuit is gone. It needs a brake pedal switch set up first, under the Sensors node in NSP. See Brake Pedal Switch.
Brake light pulsing
Turn on pulsing and the ECU can warn following drivers when you're braking hard. This part needs a brake pressure sensor as well as vehicle speed.
- Hard braking: when the Brake Pedal State channel reads ON (hard braking) and you're above 50 km/h (about 31 mph), the brake light output flashes at 5 Hz.
- Emergency stop: if Brake Pedal State stays ON as speed falls below 14 km/h (about 9 mph), the hazard lights come on, provided hazards are enabled.
To turn the hazards off after an emergency stop, press the hazard input. If that input is set up as push on/push off, you'll need to press it twice.
Test both behaviors in a safe place and confirm your class rules allow flashing brake lights. Wiring details are in Brake Lights Wiring, and speed setup is in Vehicle Speed Sensors.
