Try to install the camera as centered as you can. If not, you will have to uninstall everything back. To avoid this, test the placement of the camera by throwing the Aux and power cable to the front seats and connect the camera to the radio again. If its centered then install and tighten everything back.
Testing. The camera was not centered so I adjusted it.
Then route the cables. Use the factory cables as your guide. I used a splice clip to ground the camera to the license plate lights ground cable. (Blue clip)
Use a hanger or something similar to pass the cable through the hole of the door to the grommet.
Install the cable through the grommet.
I was wondering why I didnít have XM radio. Install back the grommet and door trims.
Instead of installing the cable like the factory camera I took the easy way and routed the cable trough the sealing. Push the cable trough the interior trims. From pillar to pillar remove the door rubber seal and tuck it in. The red line shows the route that I chose for the cable.