This is a very simple install. I definately reccomend removing the front bumper and then taking off each headlight housing. This will make it MUCH easier to install the delicate bulbs. With the bumper off and the headlight housing gone, you'll be able to easily find a mounting point for the ballast, which is small. There is plenty enough cables for the install. Only problem that I've had is that the sticky stuff that is included to mount the ballast isn't so sticky after all. So I recommend using the sticky stuff, and then zip tieing the ballast for extra security. Also, I was having some problems with the lights not coming on when i turned them on. It turns out the connecter between the HID wiring harness and the factory wiring harness don't fit too snug. So zip tie the two together as tight as possible. After that, you're good to go.
I posted up some pics a while back of my 6000K kit, but I can't seem to find them now.