How do you change ignition switch on 1991 SL 500?

To change the ignition switch on a 1991 SL 500, first disconnect the battery to ensure safety. Remove the steering column covers by unscrewing the screws and carefully prying them apart. Locate the ignition switch, disconnect the wiring harness, and unscrew the switch from its mounting. Install the new ignition switch by reversing the steps, reconnecting the wiring harness, and reattaching the steering column covers before reconnecting the battery.