Abstract: An automotive turn indicator has a turn signal cancellation apparatus mounted on a steering column and wheel assembly. The apparatus comprises a boss cover of a plastic material extending around a steering wheel boss and secured thereto and a turn signal cancellation cam having crests at the opposite ends. The boss cover has cam actuating projections integral therewith and extending from the bottom surface thereof and a reinforcing portion integral with the boss cover and with the cam actuating projections and disposed radially inwardly thereof. The cam actuating projections are movable along a circular path about the axis of the steering shaft when the steering wheel is rotated. The signal cancellation cam is operable by a turn indicator lever so that the crests of the cam are moved into the path of movement of the cam actuating projections whereby the cam can be actuated by engagement of one of the cam actuating projections with one of the crests of the cam.