Basically, yeah. It was plug n play both times I've done it. Also, a significant amount of bulb plugs are the same, in case you get the wrong ones and need to buy different, separate bulbs. Just be sure to visually verify that they are the same, or you might end up with 2 hid kits and 3 sets of bulbs.(been there)
Key here is to be sure to specify which bulb size you need when ordering, or you may end up wi h1, which seems to be the standard aftermarket bulb size.