FORD 2013 E-450 v.1 - Manual (Page 229)

Replacing Side Marker Bulbs
1. Make sure the headlamp control is in the off position.
2. Remove the headlamp assembly. Refer to Replacing headlamp bulbs
in this section.
Aerodynamic
Sealed Beam
3. Rotate the bulb socket counterclockwise and remove.
4. Carefully pull the bulb straight out of the socket.
To complete installation, follow the removal procedures in reverse order.
Maintenance 229
2013 Econoline (eco)
Owners Guide gf, 1st Printing
USA (fus)