I would think you could tap into about any wire run that does the light thing, open of doors/FOB activation, and then dims out.
I did this on my last car being an RX-8. I used LED strips, on the driver side I used two 5 light strips. I mounted each under the dash on each side of the steering column so they wouldn't show. On the passenger side I used one 10 light strip under the dash. I taped into the existing line using in-line crimps. Cost me around $15 via on-line ordering. Took around 1/2 hour of time.
I plan to do the same on this car. The only question in my mind is which wire? When I get ready I will just trace one from the fuse block, if I don't find out on-line, for one that behaves as described above.