Here is what I did and it worked fine. My camera is the brandmotion 9002-8838(its grainy at night which I'm pissed about).
Got an idatalink wiring harness for chysler vehicles.
I ran all the wires from the trunk to the back of the head unit.
Red camera wire to red wire in the harness
Black camera wire to black wire in the harness
Green camera wire(this is the back up wire for brand motion) to the purple white wire in the harness.
RCA into the brown input in the back of the pioneer unit.
2016 Jeep Wrangler Sport S JKU with the stock non nav radio, no amp either
Upgraded t