The 4Runner has weak factory headlights, we all know this. In our headlights category, we install and review many different bulbs. From LED to HID, and Retrofits to DIY, you will find it all here. Everyone has a different driving style so it’s important to do your research before buying something. HID bulbs are some of the brightest options on the market but maybe an LED upgrade is better suited for your application. We have compiled many options for the 4Runner’s forward driving lighting in this category.