Brake lights via lead (normal function)
When the brake pedal is depressed, the brake light switch (29) is actuated. The brake light switch (29) is supplied +30 on pin 1. When the switch closes, B+ is supplied further out to pin 2. From brake light switch pin 2, voltage is supplied to the engine control module and REC (701) pin 5 (B2-D). Regardless of the position of the ignition switch, REC supplies B+ (PWM 100%) from pin 2 (R-D) to light cluster (30/418RL) pin 2 for the left-hand brake light, from pin 4 (R-D) to light cluster (30/418RR) pin 2 for the right-hand brake light and from pin 15 (H- 2) to high-level brake light (30RC) pin 2. Pin 3 of the light clusters (418RL/RR) is grounded in grounding point G3 (left) and G29 (right). High-level brake light (30RC) pin 3 is grounded in grounding point G3.