Brake light circuit for engine retarder

摘要

A brake warning apparatus for a vehicle having a motor brake retarder system for warning a trailing vehicle the motor brake retarder system is activated and the vehicle is decelerating. The motor brake retarder system having a plurality of retarders disposed on respective cylinders of a motor of a vehicle for imposing a braking function to the respective cylinders of the motor, each retarder electrically connected to an electronic control module by one of a plurality of control leads. The brake warning apparatus includes an electrical interface electrically connected to each one of the plurality of respective control leads for receiving a control signal from the electronic control module. The brake warning apparatus also includes a brake warning switch for receiving the control signal from the electrical interface and in response to the control signal passing an electrical current to the brake warning light.