Today, I installed a backup camera with the rear view mirror from Echomaster. Purchased from Best Buy. With the help of this forum and additional web searches, I was able to get it working perfectly. For my 2007 G6, I spliced into a lighter green wire. There are two of them, one going to each of the reverse lights. The third green one is a different color green. That one was for one of the brake lights (oops). Easy fix to put it back together though. I spliced the red wire from the camera into the left reverse light, lighter green wire. The black wire from the camera spliced into one of the ground wires that was screwed into the vehicle chassis. The mirror had to be powered from a 12v source, so I ran wire from the inside of the cigarette lighter sockets to the supplied red wire for the mirror. VOILA, it all worked! Picture looks clear and bright, and only works when in reverse. I love it!