If your car came from the factory with halogen or HID bulbs, you’re going to need to replace them or upgrade them down the line. Both of these bulb types lose light output over time; thus, even ...

Three: a halogen, a CFL, and an LED. (Rimshot ... The good part: CFL bulbs are significantly more energy-efficient than halogens; a 60-watt replacement bulb consumes only 15 watts.

This is a major worry with LED lamps that are increasingly being installed in cars, often replacing the old-style halogen bulbs that have a very different color spectrum and beam patterns ...