Hi. I own 2015 and 2018 NV200 cargo vans. Neither have rearview mirrors, because they do not have rear windows. I created this hack using the reversing camera from Nissan in order to create a virtual rearview mirror that can be turned on at any time. I've created a video on YouTube that shows how it's done if you are interested.
https://youtu.be/h5JJ6tYA4Uc