Subaru 2003 Impreza Owner's Manual page 393

Maintenance and service
3. Remove the bulb from the headlight assembly.
4. Install the new bulb.
5. Install the bulb holder in the headlight assembly
by turning it clockwise until it locks.
6. Reconnect the electrical connector.
11-64
J Front turn signal light and parking
light
1) Front turn signal light
2) Parking light