If you have a backup camera already...there is a video box above the steering column that has inputs for side cameras. We don't route rear cameras to the Jense (although you could) we route them to the rear view mirror monitor.
We use Rear Vision Safety camera and video boxes...so if you bout from side mount cameras you just drill a hole in sac fender, run the wire to the steering column area and plug it right into the back side.
Assuming you actually have a back up camera.
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