Rear/Brake Light

Rear/brake light
The rear light and brake light bulbs are in separate compartments in the left and right light clusters. When the headlights are switched on, all bulbs in compartments 1 and 3 are switched on. Those bulbs have a power rating of 21 Watts. For the rear light function, all four bulbs are controlled by pulse width modulation. This dims all four bulbs to 5 Watts.
During braking, the light switch centre receives a signal from the brake light switch. The light switch centre then applies 21 Watts to the bulbs in compartment 1. In that way, the brake light function is performed.