How do you replace combo switch and relay on a 1996 Oldsmobile aurora?

To replace the combo switch and relay on a 1996 Oldsmobile Aurora, first disconnect the negative battery terminal to ensure safety. Remove the steering column covers to access the combo switch, which is typically secured with screws; disconnect the wiring harness and replace the switch. For the relay, locate the fuse box, identify the relay associated with the combination switch, and pull it out; replace it with a new relay. Reassemble everything and reconnect the battery to test the new components.