Wayne Kramer moved to New York, continued to play ultimately ending up on the West coast. He recently released a solo album and runs the charity "Jail Guitar Doors" that provides guitars to prisoners.
Johnny Thunders moved around a lot, sporadically recorded and continued to take Heroin. In 1991 Johnny Thunders died alone in a New Orleans rooming house. All of his belongings, including the clothes he was wearing, were stolen. Did he OD, the police thought so, or was he murdered as his family believes to this day. We'll never know as he is listed as passing under mysterious circumstances.
Below is a song/video about Heroin starring Johnny Thunders.