Just installed LED H11 that came from Amazon.com. Easy plug-n-play installation. Because of extra wiring and LED driver, keeping the dust caps was not an option. Not a big deal, since LED lights run hot and have a fan built in for cooling; you will want to have airflow as opposed to trapping the heat with the dust caps. Initial impression is that road seems brighter, and LED reflects better on signage. It could just be my mind playing tricks on me. With OEM halogen hitting the pavement, already illuminated by yellowish sodium vapor street lights, you can't really tell what your headlights are doing. With LED lighting on the pavement, you can obviously see the white light.