I got one of these off ebay:
http://deautokey.com/product/mkvii-v...-plug-and-play. I didn't think it was bright enough so I looked for more options.
This is what I ended up doing and I'm very happy with it
https://www.amazon.com/YITAMOTOR-Daytime-Reverse-Backup-Parking/dp/B018G5MY5O/
Here it is with the cargo cover on like OP asked about
Here it is with the cargo cover pulled back
Side view:
Close up of install:
I took off the panel on the hatch that allows access to the trunk latch. Then I drilled 4 holes with a 1/2in drill bit. I put the light through and screwed the nut in. I took the wires and connected it to a new wire I ran through the hatch panel, through the rubber grommets into the ceiling right next to the light. I spliced the wiring for the hatch light to the wire and all done. The angle of the panel is perfect to shine down to the cargo area and not get in the way when using the cargo area or obstructing my view in the rear view mirror. It's pretty sturdy too and I'm not worried about the LED breaking off. It's also above my head and I don't block the light when looking in the trunk.