The purple "Reverse" wire on the wiring harness. What does it hook up to? If I switch the mode to "Camera" and put the car in reverse the camera works. However, If I am in any other mode and put the car in reverse, nothing happens. No Camera! When the car is placed in reverse the camera should automatically come on. Right now I don't have the purple wire hooked to anything. There were no instructions telling me what to hook it up to. I'm thinking this is the problem. Can anybody enlighten me?
The purple should be connected to a reverse gear indicator line so it can detect when the vehicle is in reverse and turn the camera on. Where it is will be dependant on your make and model but usually you can find it with a voltmeter coming out of the fuse box. You can also search the internet for your vehicle. I personally would have designed the audio system to detect when the camera turns on and wire the camera into the reverse light so it powers on in reverse as this wire is much easier to find than the reverse gear.