I've had a lot of requests for Installation links so here it is. Step one, Go to
www.spencershids.com and get the kit you need.
Should look like this inside.

Step two. Get some 3m Double sided sticky tape, as wide as possible. put it on like this

Clean where you are going to mount these really, really good. I also use a product called adhesion promoter. Its expensive from GM, but it assures a nice tight hold. I havent had any fall off yet.
Mount your ballasts. I mounted mine here between the radiator and the headlight mount.

If your going to run a relay, all mine come with a 9005 style plug, your bulb comes with the adapter for it like you see below

then connect to vehicle headlight wiring on passenger side. leave drivers empty.

Install the lamps. To get to the passenger side lamp, remove the airbox.

Remove old shitty halogen bulbs. Toss them into your glovebox if for some reason your kit quits working, your not left stranded.
Put HID bulb in socket.

You should have 2 ends like this. they plug into the ballasts. they can be plugged in backwords on some vehicles. on others you have to swap them the way you think they should go.

Then give your relay power

Then ground. Hopefully you havent put your airbox back in, because I recommend grounding to the metal the airbox sits on.

Connect the ballasts to the bulbs.

Check to make sure it all works before you go putting it back together.
Check it on a wall to be sure you are not aimed too high. Then enjoy!!!
Please tell me if i forgot anything. My kit was already installed so I may have forgotten to add something!