When sleeping in the back of the Prius, the key element missing is a way to open a closed hatch from the inside.
This plug-in to OEM hatch switch connecter harness allows you to have a push button that works like the push button on the outside of the hatch. Does not include a plastic inner hatch panel piece.
To install, remove the inner plastic trim on the vehicle, and un-plug the connector from the OE switch. Plug in new harness to OE switch and OE switch connector then proceed to place grounding wire under main hatch grounding bolt.
Drill a hole in the hatch plastic inner panel that’s removable closest to the driver’s side. Install the switch and re-install the inside hatch plastic trim panels.