2007 factory backup camera with aftermarket stereo

Im looking to install an aftermarket stereo in my 2007 tundra. The only thing I am confused about is how to retain the factory backup camera. Do I need to order any additional parts to make it work?

 

I believe Crutchfield sells harnesses to
Keep the backup camera.

 

I just installed a pioneer 1300. My 2013 stock camera won’t display on the head unit. It’s not the head unit. I’ve tried a different cam and it works fine. Is it the harness? The wiring coming from my rear view mirror has about 20 wires. All kids of buttons on my mirror that I’ve never used.