Aftermarket LED headlight bulbs are sold in their thousands as a cheap upgrade, promising brighter, whiter light for an older ...

They’re consistently popular with the readers, which is admittedly part of my (and EDN’s) motivation to continue doing them. But I personally also find them fascinating; inevitably I come across at ...

LED headlights have become an important feature on modern cars, but is it possible to overstep and cross a legal threshold?