Genuine reversing camera for a b7 Estate

[Chillout]

HI all
I have been scouring the net for answers I have found most online however I am still unsure about connecting to the can bus and the positive feed to the camera module without cutting into the head unit harness, the car is still under warranty and would like to keep it factory ,it would be ideal if I could replace the crimped terminals at the headunit and tie into them .

any help would be appreciated cheers