I am trying to install a switch to my reverse camera as to switch it on when I drive as I have blind spots. I have a stock 2014 hilux stereoin an automatic. There are four wires running from the back of the head deck to the camera. Black,white,red,yellow. My understanding is a positive constant 6v to the camera and three other wires and that is all. Two would have to be for the camera and two for the power control. Considering one wire is always live I'm guessing the switch is on the negetive wire? How do I wire in the switch?
