1. Turn off the main power to the circuit at the breaker panel to ensure safety.
2. Remove the wall plate and unscrew the light switch from the electrical box.
3. Use a non-contact voltage tester to confirm that no electricity is flowing to the switch terminals.
4. Disconnect the existing wires and inspect them for signs of heat damage, arcing, or loose connections.
5. Install a new, code-compliant light switch, ensuring all wires are securely fastened under the screw terminals rather than using backstab connections.
6. Carefully tuck the wires back into the box, mount the new switch, and replace the cover plate before restoring power.
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