Use the car only lamps H4 lamp. And is popular like the original halogen light as one. So their power input is a three-wire type (that is, a positive sharing, two separate cathode). And I HID with a H4 lamp, installed an HID lamp, a common halogen lamps, so when installing halogen lamps should be noted. Ordinary halogen lamps or 12V DC power, and HID lamp ballast that must pass the final connection HID lamp high voltage cable complete. Installation be sure to separate the power lights near the line of control, HID lamps and halogen lamps cannot be connected to the same input power.