Ford Mercury Manual page 353

Lights
3. Remove the bulb socket from the
lamp assembly.
4. Carefully pull old bulb out of the
lamp assembly
Reverse steps to reinstall bulb(s).
Replacing side repeater bulbs
1. Turn the headlamp switch to off.
2. Carefully pry the lamp assembly
away from the fender.
3. Rotate the bulb socket
counterclockwise to remove it from
the lamp assembly.
4. Pull the bulb straight out.
Reverse steps to reinstall bulb(s).
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