Where are you guys mounting this? I'd like to avoid drilling if possible.

 

I relocated my licence plate to the spare tire before I got mine so it was easy. If your wheel has center caps that screw in like mine then you could make a bracket to fit where your center cap goes and mount it there.

You will love having the back up cam

 

Finally had some time and made a mount for the camera. I then painted, mounted it behind the spare wheel.