There have been numerous discussions on migration to HID to LED from halogens.
This video explains them all, benefits and pitfalls of each, and goes a long way to showing why the MoT test fails cars that have had their bulbs changed for a newer technology.
This video explains them all, benefits and pitfalls of each, and goes a long way to showing why the MoT test fails cars that have had their bulbs changed for a newer technology.