How do you replace main beam bulb on corsa 1.2 sxi?

To replace the main beam bulb on a Corsa 1.2 SXi, first, ensure the vehicle is turned off and the keys are removed. Open the bonnet and locate the headlight assembly; you may need to remove the plastic cover or clips to access the bulb. Disconnect the electrical connector from the bulb, then twist and remove the old bulb. Insert the new bulb, reconnect the electrical connector, and secure everything back in place.