Pull off the DRL/marker light housing below the headlights and look at the harness for marker bulb. You can splice into the wires going to the marker bulb socket. These SHOULD be light blue and black on the left side, and dark blue and black for the right. Your halos will probably have a blk and red wire for each unit. Just splice the blk wire from the halos to the blk wire from the factory harness, and the red wire from the halos to the blues from the factory harness. Hope this helps.