Hi RAMVA!!! I know I've heard the answer to this very same question, but as it has never happened to me, I didn't pay attention.
A few minutes ago me and a friend just came home, and realized that after turning off the car ('72 STD brazilian), with the headlight switch ON, the car keeps running. even after the key has been removed. probably the headlight switch is grounded somewhere. Where should I look?
Thanks for your help.
Karls