Subaru 2003 Impreza - Manual (Page 387)

IMPREZA(NA) A1850BE-A (ENGLISH)
Maintenance and service
11-64
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.
J Front turn signal light and parking
light
1) Front turn signal light
2) Parking light