How do you install a horn relay on a 1964 Buick Skylark?

To install a horn relay on a 1964 Buick Skylark, first, disconnect the battery to ensure safety. Locate the original horn relay, typically near the firewall or fender; remove the old relay by unscrewing it or unplugging it from its connector. Install the new relay in the same location, ensuring the terminals match the wiring configuration. Finally, reconnect the battery and test the horn to make sure everything is functioning properly.