They are very simple to install and make a huge difference. I have not installed them on my Super Duty yet, but when I did the install on my H2 Hummer, all I had to do was angle the headlights down about 1/2 turn on the adjustment screw and never a problem. Great Light output as well.
In the following pic, the Drivers Side headlight is HID and the Passengers Side headlight is the stock factory bulb.
