1. Open the boot of your Vectra.
2. Locate the two plastic screws that hold the number plate light assembly in place. These are located at the top of the assembly, one on each side.
3. Use a Phillips-head screwdriver to loosen the screws, and remove the number plate light assembly from the vehicle.
4. Push down on the tab located at the bottom of the number plate light assembly, and remove the bulb from its socket.
5. Insert the new bulb into the socket, and make sure that it is securely seated.
6. Reattach the number plate light assembly to the vehicle, and replace the two plastic screws.
7. Close the boot of your Vectra.
The new number plate bulb should now be working.
