The answer to 'rewiring sparking' is that sparking in electrical wiring is a serious issue that requires prompt attention. Sparking can be caused by loose connections, damaged wiring, overloaded circuits, or outdated electrical systems. Symptoms include visible sparks, flickering lights, and the smell of burning electrical components.
In many cases, rewiring or electrical repairs should be handled by a licensed and experienced electrician. Attempting DIY electrical work can be extremely dangerous and may even violate local building codes. If you notice any sparking or other signs of electrical issues, it's best to shut off the power and call a professional electrician right away to diagnose and fix the problem safely.