The numbers you see on the box don't always work out in real life. LED bulbs do last longer, but those claims about five to 10 years are estimates based on internal testing -- and companies are always ...

Q: My left headlight is dim on my 2013 Ford F-150. I’m wondering if a new bulb might fix it? I was also thinking about installing new lenses, as they are cloudy and have been polished once without ...

Interference from low energy light bulbs, which now comes under the broad heading of Electromagnetic Compatibility or EMC, has been a problem since the first compact fluorescent bulbs (CFLs) went on ...