If you didn't have them factory installed you can still install them. Now the wiring might be a bit of an issue. You will have to find a way to run the wire to probably the footwell lights. That should make them illuminate correctly. I seem to remember coming across someone who swapped his illuminated trim from the factory to a non illuminated carbon sill. So you can retrofit.Anyone here know if cars with the non illuminated door sills are easy to be modified to have the illuminated door sills? Similar to the door sills in the pic from Stug360?
On the off chance if someone on here has taken them apart is the non illuminated sill just the same minus the light. Would be a cheap upgrade to just throw a led strip under it and call it a day.