The answer to 'how to fix lighting installation' is to first identify the issue, such as a flickering light, a burnt-out bulb, or a problem with the wiring. Then, follow the appropriate steps to address the problem, which may involve replacing the bulb, troubleshooting the electrical connections, or even rewiring the fixture. Always remember to turn off the power to the circuit before working on any electrical components to ensure your safety.
If the issue is more complex or you're not comfortable working with electricity, it's best to call a licensed electrician to diagnose and fix the problem. They have the expertise and tools to safely and effectively resolve lighting installation issues.