HD Relay: 9005/9006/9012/H10Reality Check: Customers often ask, Do I really need a harness? Yes! A relay harness is designed to deliver steady voltage to your HID ballasts directly from the car battery. Nobody likes a flickering headlight, so why risk it? Factory headlight outputs are really only designed to power a halogen light bulb, not an HID ballast. Don't Skimp: As one of the most important parts in any HID lighting upgrade; don't skimp out when it comes to your wiring. It
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