How do you swap out the overdrive switch on a 2001 Mazda 626 LX?

To swap out the overdrive switch on a 2001 Mazda 626 LX, first, disconnect the negative battery terminal to ensure safety. Remove the plastic cover around the gear shift by gently prying it off, then locate the overdrive switch, which is typically mounted on the transmission or the gear shift assembly. Disconnect the electrical connector from the switch and remove it from its mounting. Install the new switch by reversing the steps, ensuring everything is securely connected before reattaching the plastic cover and reconnecting the battery.