How do you replace the reverse light switch on a Volvo 240?

To replace the reverse light switch on a Volvo 240, first, disconnect the battery to ensure safety. Locate the switch, which is typically mounted on the transmission; you may need to remove the air intake duct for better access. Unscrew the old switch, replace it with the new one, and reconnect any wiring. Finally, reconnect the battery and test the reverse lights to ensure they function correctly.