Not sure if this helps you but I recently spliced a generic camera into my 2015 Optima harness. It only uses the red (power), black (ground), and yellow (video signal) wires. Not sure what the orange, grey, and white wires are for but they were not needed to use a generic camera on the factory radio. I had to buy a camera that had the option to cut a wire to eliminate the grid since that was built into the radio.