Negative Brake System?

I have a 2014 RXR 570LE w/EPS. Does anyone know if the braking system on the 570 is a negative pulse braking system?

I’m planning on installing a rear light bar that allows the brake and tail lights to be wired to the rear light bar… and the instructions mention the need to perform an alternate wiring for the light bar if it is a negative pulse braking system.

Thanks,
John