Rear camera not working
 

I have all my rear camera wiring together and it isn't coming on when I reverse. Is there a way to test with a voltmeter, right at the end where the camera plugs into the wiring, if the wiring is hooked up right?

You could probably test the power signal with a voltmeter to make sure the camera is getting 12V or 6V, whatever your camera is rated for. As for the signal coming from the camera, I'm not sure what that is supposed to look like on a voltmeter. Sometimes after you've wired it, you have to play with the settings in the head unit. Mine had settings for polarity. Make sure you try fiddling with those too. Good luck!

The power lead was reading 10.8 volts so that's good. The camera wire is what I need to figure out now. Only settings I could find for the camera in the headunit was regular or mirror.

Figured it out with help from @Berliner in here. I didn't have the brown wire in the back of the head unit wired up to the 12v reverse lamp in back. Problem solved.