PrecisionLED.com makes 2 trunk light strip kits. I bought the larger one (30 LEDs) and it installs easy (as shown above, pull the fuse first though). There is an edge on the roof of the trunk (2013 Coupe anyway) to mount the LED strip so it faces towards the bottom of the back seat so it doesn't blind others and keeps the light in the trunk. I highly recommend the upgrade!
One of the images is where the wire comes from the original bulb location to the LED strip through the trunk frame. You can use any sufficiently long slightly flexible stick to run the wire. I used white floor tape to help cover the wires (our Coupe is white so it's an easy match and hard to see).