Hey everyone, I have a 2007 F150 Lariat, 5.4L. I have an after market back up camera and audio head unit installed. Just recently the back up camera, reverse lights and reverse sensors stopped working when I shift from drive to reverse. This does not happen if I am shifting from park to reverse, then everything works as it should. Can anyone tell me what they think is happening here? This is a recent problem, previously everything was working fine. Thanks in advance for your help with this.