Adding to this thread and maybe one or two others as I just added my aftermarket radio to my stock rear camera and some of the wires are different colors than what I've been seeing here. My Z is a 2019 Heritage manual. Apologies for resurrecting older threads.
In some threads I've seen the camera wires as being contained within a larger insulated gray wire. In my case it was a blue wire.
Some images show this gray wire containing 1 green, 1 red, 1 white and 1 black wire. In my case there was a red, white and black wire.
I tapped the white wire as ground and the black wire as positive for the rca cable that connects to the rear of my radio.
This differs from other instructions stating that the black wire is ground, red is positive and green is the reverse light trigger.
Here's an image from another thread showing the blue wire in the back hatch area. It looks the same in the kick panel.
For the trigger wire that shows voltage when in reverse, some threads referred to an orange or tan wire in the drivers side kick panel area. My wire is tan with a white stripe, also in the kick panel.
Hope this helps others with late model Z's that might have the same wiring as mine.
