Cancel Cam Assembly
The Cancel Cam Assembly includes five solid state infrared transmitter/receiver units. These units along with two identical optical units in the Turn Signal Switch are used to send optical signals between the steering wheel and steering column. The optical units are arranged so they are always in sight of each other and thus form an optical slip ring.
The Cancel Cam incorporates circuitry which changes the signals from optical to electrical and vice-versa. The Cancel Cam Assembly receives power, ground and illumination power through 3 of its 4 slip rings from the Turn Signal Switch brush contacts. The horn signal is sent through the fourth slip ring.