SODIAL(R) 12V 55W Ultra Slim Car Xenon HID Replacement Digital DC Ballast Bulbs Fit Integrated one piece Ballast, simplified wiring which eliminates any unnecessary confusion during install. This ballast will give out more consistant output, meaning color will be more even and accurate. Ballast with aluminum case: waterproof, anti-shock and low-voltage protection. Plug & play: easy to install and no modification required.