Ford 2003 Mustang Workshop Manual page 815

Install the lock cylinder housing.
Position the lock cylinder housing and the shaft assembly on the actuator housing.
Make sure the upper and lower lock actuators are aligned.
Install and compress the steering column position spring.
Align the lock cylinder housing bushings with the pivot screws and tighten the screws.
Using a long thin screwdriver, remove the nuts installed under the lock levers.
18. Install the bearing tolerance ring.
19. Install the sensor ring.
1. Install the sensor ring.
2. Install the lower bearing spring.
20. Install the ignition switch. Align the ignition switch with the slot and index-mark on the actuator
housing.
Install the screws.