The ignition lock (also called a key lock cylinder) in the 1995 Ford Mustang is attached to the ignition switch by linkage that is moved when the key is inserted in the lock and the driver turns the cylinder. Over time the cylinder will wear and require that the ignition lock be replaced. Replacement of the ignition lock in the 1995 Mustang requires disabling the driver-side air bag module and special precautions must be followed to accomplish this safely.
Disconnect the negative battery cable from the battery using a 1/2-inch wrench. The battery in the 1995 Mustang is located on the driver-side of the engine compartment behind the headlight assembly. Wait 15 minutes to allow the residual charge in the air bag system to discharge and the air bag system to be disabled. This will prevent accidental deployment of the air bags.
Remove the steering column trim cover screws, located on the bottom of the steering column cover behind the steering wheel, using a screwdriver. Lower the tilt steering wheel fully. Unsnap the two halves of the trim cover from each other and remove them.
Turn the ignition key to the run position. Insert a 1/8-inch punch into the small retaining pin hole, located below the lock cylinder housing, and depress the retaining pin. Slide the old cylinder out of the housing.
Turn the key to the run position in the new ignition lock and insert the new ignition lock into the housing. Turn the key to the off position to lock the new cylinder into the housing. Turn the ignition key to the off position and pull on the ignition lock to verify it is securely installed. Reinstall the steering column trim covers. Reconnect the battery and tighten the cable clamp bolt securely.
