**Determine Location and Drill Hole:** First, mark the desired location and size of the downlight on the ceiling with a pencil. Then, drill holes using an electric drill. Note that for aesthetic reasons, consider hiring a professional lighting installer.
**Connect Power Cord:** Connect the pre-installed power cord in the ceiling to the downlight, ensuring wiring conforms to electrical specifications.
**Adjust Spring Height:** Adjust the wing nuts on the downlight's retaining springs so that their height matches the ceiling thickness.
**Install Downlight and Bulb:** Push the downlight into the ceiling opening, ensuring the retaining springs snap into place on the back of the ceiling. Then, install the appropriately sized bulb.