To start, go ahead and install your bulb. You may need to adjust your aim mechanism to give you clearance.
Now tuck the ballast wiring to the engine side of the headlight and the ballast itself right below the headlight fan. It will protrude out a bit, no worries! Now tuck the remaining plug that connects to the truck into the open space on the left side of the headlight.
Re-install the custom grommet over the MK5 unit and headlight opening to make a firm weather sealed housing.
Now you are ready to light up the night!