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Brake Light Switch: Notes

Similar to previous models an electronic brake-light switch (Hall-sensor) is used. It is powered from KL R ON. Its signal is provided as an analog input.

The brake switch has a level of 0 volts in the non-actuated state and approx. 8 -- 9 volts when the brake is depressed (dependent on the system voltage).

Fig 1: Locating Brake Light Switch
G03390963Courtesy of BMW OF NORTH AMERICA, INC.