Volvo 2006 C70 - Manual (Page 150)

Side marker light
Turn the bulb holder counterclockwise, pull it out, and replace the bulb.
Reinstall the bulb holder. It can only be installed in one position.
Front fog light (option)
Switch off all lights and turn the key to position 0.
Remove the panel around the fog light housing. Depress the tabs around the edges as shown in the illustration in the
right column.
Unscrew both torx screws in the fog light housing and remove it.
Disconnect the connector from the bulb.
Turn the bulb counterclockwise and pull it out.
Install the new bulb in its seat and turn it clockwise.
Reconnect the connector to the bulb.
Secure the fog light housing with the screws and press the panel back into place.
pg. 168 Maintenance and servicing
Replacing bulbs in the trunk