How do you install an ignition switch in a 95 Mercury grand marquis?

To install an ignition switch in a 1995 Mercury Grand Marquis, first disconnect the negative battery terminal to ensure safety. Remove the steering column covers by unscrewing the screws and gently prying them apart. Then, locate the old ignition switch, disconnect the wiring harness, and unbolt it from its position. Finally, install the new ignition switch by reversing the steps, ensuring all connections are secure before reassembling the steering column and reconnecting the battery.