Hello, I installed the DMH-WT8600NEX in my 2021 Rave 4 Prime,  The unit won’t auto turn on full screen back up camera when I put the car in reverse!   But only show the reverse image in the main screen.   I want to display the reverse camera on full screen when I place the car in reverse.  Is there a setting I need to set?

It's in the setting and make sure you connect the pink wire to reverse light.