Before you hook it up, just get a cheap digital multi meter from autozone or something and get a set of clips that will pinch the wire so you can penetrate the wire with the probe past the insulation. If that brown/yellow wire has 0 voltage in it when you are in any other gear than reverse then its a good start. If it has 12v of power on it then it is deff not your reverse wire.
To test the voltage of the wire simply do this...
1.) Set your DMM to the 20vdc setting
2.) Take the black wire and ground it to the frame/body of your vehicle
3.) Take the positive (red) lead off your dmm and attach the insulation piercing clips you purchased to the end of the lead.
4.) Once attached, hook it onto the brown/yellow wire and see what the voltage reads on your DMM screen. Like i previously said, if you have the car in park, the wire should not have any voltage going through it. If this is the case then place the car in reverse and hold your brake down so you dont back up into something. Look at the screen of your DMM again, it should now read a +12v reading. If this is the case, you successfully found the wire you need to tap into in order to make your reverse camera work on your radio.
Home depot, Auto Zone and Radio shack didnt have the Insulation piercing clips . Napa was closed same with another store. Lame sauce... TBC
Edit: My DVD does not work even with park break on... so there is another trouble shoot i gotta figure out.