How do you change bulb for 1987 Porsche carrera headlight?

To change the headlight bulb on a 1987 Porsche Carrera, first, ensure the vehicle is turned off and the keys are removed. Open the front hood and locate the headlight assembly; twist the retaining ring counterclockwise to remove it. Carefully pull out the old bulb, disconnecting any wiring, and then replace it with the new bulb, ensuring it is securely connected. Finally, reassemble the headlight by reversing the steps and test the new bulb.