Ford Mustang Owner's Manual page 64

Lights
Replacing front parking lamp/turn signal bulbs
1. Make sure the headlamp control is in the off position and open the
hood.
Halogen headlamp
HID headlamp
2. Remove the hex head screws attaching the underbody forward
aeroshield and remove to gain access to the front parking lamp/turn
signal assembly.
3. Rotate the socket counterclockwise and remove from the lamp
assembly.
4. Carefully pull the bulb straight out of socket.
Install the new bulb in reverse order.
64
2011 05+ Mustang (197)
Owners Guide, 1st Printing
USA (fus)