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sometimes you need to swap the positive and the ground wires on the harness that plugs into ballast. for mine I had to. Lexus reversed the wires from factory, I guess it doesnt matter in a halogen bulb setup.
Your vehicle uses a 9006 bulb for the low beams meaning that you would need to order a 9006 HID conversion kit for your vehicle. Here are some pictures of our 9006 5000k kit installed on the SC: