Back up camera mirror image setting?

Question

Hello,  I just had a Kenwood 7120 installed into my 05 F350 pick up and I have a back camera on the truck as well. The problem is when I place the truck into reverse the camera shows anything on the screen on the opposite side of the truck they are actually on. So if there is a telephone pole on the right side of the truck backing up the screen in the cab on the 7120 shows the pole to be on the left side of the truck. Is there a setting on the 7120 that I can mirror image this so the back up camera will actually reflect what side of the truck an obstacle might actually be on? Thanks Mark