Swapping your halogen bulbs for LED bulbs isn’t particularly complicated, but a lot depends on accessibility. In some vehicles, there’s not a lot of space to work with, so it’s vital to check that the bulb you’re intending to buy is suitable for your year, make, and model. Most manufacturers optimistically claim it takes between 20 and 60 minutes. We’d allow a little longer. Bear in mind that LED headlights last thousands of hours, so it’s a job you should only have to do once.