Ive installed HID with 6000K bulbs using the DDM kit found at ddmtuning.com.
I drilled a 3/4" hole in the back of the plastic cover that houses the H1 bulb to allow for the wires to pass through the housing as seen in the pictures below. I took apart the wire from the plug harness in order to pass the wire through the hole. The size of the plug harness does not allow this to happen without doing so. Just feed the rubber grommet through the hole for a watertight seal. I connected the leads to the inside housing connection and used heat shrink tubing over the connection. The H1 HID bulb fits and clips onto the housing without any modification to the bulb holder as opposed to other installs seen by other HID kits.
After all that, its just plug and play. Take a look.