O'Connor went to TV soon after her first film. She was one of the stars of the short-lived 1974 CBS series "Sons and Daughters", an ongoing saga of young love in the 50s. She was the object of John Travolta's affection in "The Boy in the Plastic Bubble" (ABC, 1976), Emily Webb to Robby Benson's George Gibbs in "Our Town" (NBC, 1977) and the tennis star Maureen Connolly in the 1978 NBC biopic "Little Mo". Since the 80s, O'Connor has been in a string of TV-movies, notably the fact-based "Why Me?" (ABC, 1984), as a an Air Force nurse who must rebuild her life after a tragic car accident leaves her disfigured, "The Deliberate Stranger" (NBC, 1986), opposite Mark Harmon as serial killer Ted Bundy, "To Heal a Nation" (NBC, 1988), as Eric Roberts' wife, in the story of the designing of the Washington, DC, Vietnam War memorial and "Flowers for Matty" (ABC, 1990), which brought Telly Savalas back as Kojak. After a brief run on the CBS daytime drama "As the World Turns" in the early 90s, O'Connor was back in primetime in telefilms like 1995's "Past the Bleachers" (ABC).