Disc 3 rear camera

hi guys new to Land Rover and have just bought a disc3 08 plate 2.7 td se model and am wanting to fit a rear camera for hitching up and reversing, I have touch screen sat nav running 2014/2015 disc and am wanting any help with what I’ll need to fit a camera to it if possible is there a kit etc tia

Google GVIF apparently you will need one for the screen to see the camera