Posted about this on the, What are you working on, thread, and thought I was done, but noooo. Installed an aftermarket backup camera on the 15 Explorer Police car in the tailgate and connected it to the 4.2" screen connector as the instructions say. Connected the power wire to a keyed 12V source. Display worked and showed the correct image when I checked and tested during installation when I put it into reverse. Also worked fine after finishing the install. Then I go for a 20 minute drive and want to back into a parking space and the screen says something like, REVERSE CAMERA NOT AVAILABLE when I put it in reverse. So then I drive home, have some lunch, then check it again and now it's working again. Ideas what may cause this? Is it ok to have this powered constantly when driving instead of connecting it to the reverse lights? Could it just be overheating from that?