I'm trying to install a camera for my 2012 Nissan Versa 1.8 and when I took out the reverse light I saw 3 black wires connected to it. I don't know which is the ground wire and which is the positive wire since it is not colored coded.

www.paulstravelpictures.com/Nissan-Vers ... e-013.html


These wires are before I can reach the reverse/brake/turn signal light.
www.paulstravelpictures.com/Nissan-Vers ... e-008.html


These are not my pictures. I've been trying to look up for answers but no luck with the wires, but these pictures are same as how the wires on my Nissan looks like.

You may have to unwrap some black wrap off the wires.

http://www.nicoclub.com/service-manual? ... 2/Hatch/LT

Go there, let the page load fully and then scroll down to pg. LT-70, the wiring schematic clearly shows a yellow wire as the power input to reverse lights.

So the yellow wire would be my positive power