Not quite. My camera draws +12v from the reverse lamp circuit. Switching the head unit to camera mode won't display what's behind me because the camera, itself, has no power unless the vehicle is in reverse. I can add wiring to do this but then it's two actions (switch to give camera power ... and adjustment of head unit) to turn it on. If I'm going to replace the camera at some point then I'm also going to wire it all up so that a single switch does it all.