I recently purchased a JVC KW-V840BT and as far as I know it is Rear View Camera ready. Unfortunately I don’t have a rear view camera installed on my vehicle but I remember seeing that option listed and am considering adding one later.
Here’s what I find online -
compatible with SiriusXM satellite radio tuner
inputs: rear USB input, rear A/V input (mini), rear-view camera input
outputs: rear video output, 6-channel preamp outputs (4-volt front, rear, subwoofer)”