HID lights provide the highest light output, but they require additional components. The Lightforce Stryker HID on the left shows the starter (A) and transformer (B) that are required to start and power the arc in an HID bulb. You’ll need to find locations to mount these securely to your 4x4. The Rugged Ridge HID (right) has these components built into the light housing, which greatly simplifies installation. Lightforce recently introduced the Genesis line, which also has the components built in.