The answer to 'how to fix lighting installation' is to first turn off the power to the circuit at the circuit breaker. Then, inspect the light fixture and wiring for any obvious signs of damage or loose connections. Tighten any loose screws or wire nuts, and replace any damaged components. If the issue persists, you may need to troubleshoot the wiring or consult an electrician.
It's important to take safety precautions when working with electricity, such as turning off the power, using insulated tools, and avoiding touching live wires. Lighting installation should be checked and maintained regularly, typically every 6-12 months, to ensure it's functioning properly and safely.