RENOWNED: Xtreme HID kit ballasts are the best aftermarket HID ballasts available. They feature a waterproof/shockproof case, and an extremely low start-up draw. Dont get left in the dark on super cold nights as these ballasts are designed to perform to OEM specs - many aftermarket ballasts have cold start issues. VERSATILE: Xtreme HID ballasts can be used in 9-32V ranges, meaning that theyre perfect for 24V tractor trailer applications. Each ballast comes with a "9006" style input plug, and industry leading AMP connectors that connect to a rebased HID bulb.