How do you program a keyless entry remote for Mazda Miata MX-5?

To program a keyless entry remote for a Mazda Miata MX-5, first, enter the vehicle and close all doors. Insert the key into the ignition and cycle it from the "OFF" position to "ON" eight times within 10 seconds, ending in the "ON" position. The locks should cycle to indicate that the vehicle is in programming mode. Finally, press any button on the remote to program it, and the locks will cycle again to confirm successful programming. Repeat for additional remotes if needed.