I just wanted to share this ,,funny to me,,
I got a Touch screen navi\dvd\back up camera. Recently my back camera is acting up. After coming out from a car wash,w\ Radio off. Using my left turn signal my navi screen is blinking with the turn signal. using right turn no problem ,if i hit the brakes while using right signal . the screen will go to back up camera mode , meaning i can see the back camera is On ,even i'm going forward. Its almost dark so i turn the headlights On, then the screen disappear. but the radio turn itself on.. I made it to the house wondering WTF is wrong with my truck .So as i'm sitting inside my truck trying to figure out what did i do wrong do make this thing to happen . I went to check the camera line . for the reason that i was checking it a day before this nightmares happens .found out that the camera chassis ground was corroded \ broken .I splice Them back together Test it and everythings back to normal. Unbelievable !!!for only broken ground wire will cause all this trouble .

 

That is pretty typical for a broken ground where the circuit is finding another way to be completed. When you get goofy behavior like that a ground problem is about the only thing that could cause all of that.