I forgot to mention, they have to be out of a coupe, vert won't work properly.
As for wiring, the connector under the seat is the same, and the wiring is the same too, if you have it. If your car doesn't have power seats, then you don't have the wiring for them, this you have to add yourself. I did it on my last e46, and it wasn't terribly hard. There's a couple good diy's on fanatics that will help immensely.