Subaru 2002 Impreza - Manual (Page 357)

IMPREZA(NA) A1830BE-A (ENGLISH)
Maintenance and service
11-60
3. Remove three bolts and disconnect connectors,
and then detach headlight assembly.
HGB030BA
HGB031BA
4. Remove the bulb socket from the headlight as-
sembly by turning it counterclockwise.
HGB010BA
5. Pull the bulb out of the socket. Install a new bulb.
6. Set the bulb socket into the headlight assembly
and turn it clockwise until it locks.