The answer to 'electrical wiring dimming lights' is that there are several common causes for dimming lights, including issues with the light fixture, dimmer switch, or wiring. Symptoms may include lights that flicker, dim, or turn on and off unexpectedly. Solutions can range from replacing the dimmer switch to rewiring the circuit, depending on the root cause.
If the dimming is limited to a single light fixture, the issue is likely with the fixture itself or the connection to the dimmer switch. This is usually a straightforward DIY repair. However, if the dimming affects multiple lights on the same circuit, the problem is likely with the wiring or the dimmer switch, which may require the expertise of a licensed electrician.