Ford 2003 Mustang Workshop Manual page 816

21. NOTE: The narrow section of the keyhole in the lock gear should be in the one o'clock position.
Install the lock gear.
Use Ignition Lock Grease F0AZ-19584-A or equivalent meeting Ford specification ESA-
M1C232-A to coat the lock gear.
22. Install the lock housing bearing.
The narrow section of the keyhole should be in the one o'clock position, with the tab
inboard at the three o'clock position, and rotate it counterclockwise.
Lubricate the lock housing bearing with Ignition Lock Grease F0AZ-19584-A or
equivalent meeting Ford specification ESA-M1C232-A.