My Seltos came with the normal plastic ones. All you have to do is lift the weaterstrip and the door sill by hand, then use a plastic body tool to pop up the plastic sill. If you look closely, you will see notches where you can slide the tool in along the bottom edge. Just put a towel or rag under the tool to protect the paint. It snaps in with clips for both the old part and the new illuminated sill. The old plastic ones I have on the shelf for no particular reason. You can see more details in the PDF I posted above. It was pretty easy if you take your time and have simple tools and such.