How do you replace the dash lights on a 2004 Mazda 6?

To replace the dash lights on a 2004 Mazda 6, first, disconnect the negative battery terminal for safety. Remove the dashboard trim by gently prying it off with a trim tool, then unscrew the instrument cluster from the dashboard. Carefully pull out the cluster and locate the bulb sockets at the back; twist and remove the old bulbs, replacing them with new ones. Reassemble the cluster, secure it back in place, and reconnect the battery.