he third season of Knight Rider, an American television series, began September 30, 1984, and ended on May 5, 1985. It aired on NBC. The region 1 DVD was released on January 31, 2006.
This season saw KITT gain a new dash and abilities, Patricia McPherson returned as Bonnie Barstow and would remain for the remainder of the series. Michael and Devon had also become close friends as well as associates by this point, trusting one another enough to work and conspire in secret together without notifying KITT or Bonnie. KITT's renegade prototype KARR finally resurfaced.Overview from themoviedb.org