For those with the (check-less) check panel that only displays a seat belt warning?
Made use of a spot that's previously only good for hiding a doobie, an old center console (for the vinyl), inexpensive materials, hours and hours of labor, and 3 of the 4 existing wires to fabricate a 3rd dome light. Yes... it be wired up to the door pin and light supervision from the keyless entry using a diode.
I agree it would be easier to mount the map lights from the vert but I find that rear view mirror is a little too bulky.