http://www.skafia.com/itr/hid/

this is how you do it properly



if you don't care about having the hid's be usable, don't mind them blinding oncoming traffic, attracting police attention, like low quality components that don't last and wasting your hard earned money, then by all means, grab an hid kit.

If you're buying hids to have oem quality hid performance, the link above is the way to go