Subaru 2003 Impreza - Manual (Page 390)

IMPREZA(NA) A1850BE-A (ENGLISH)
11
Maintenance and service
11-67
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3. Remove three bolts and disconnect connectors,
and then detach headlight assembly.
4. Remove the bulb socket from the headlight as-
sembly by turning it counterclockwise.
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.