[Clancy]

When you disconnect the old lights, it will make sense. The spades connect to the same wires as the old bulbs (They are sending power that went to the headlight to the ballast.) Trace that wire - the plug on the end of that goes into the ballast. Then the ballast comes back to the lead on the actualy HID bulb. (smaller round connector).

You don't have to pull the whole fender liner either - just cut the wheel (front in) and remove two screws (you'll see them).