Okay, this isn't for my Z but the Jeep. I have put lots of stereos in cars and I forgot what to do with one wire. I have a black wire left from the stereo wiring harness. The wiring harness that I have to connect it to the Jeeps wires doens't have a black one. I have a brown mute wire left, a orange/white wire for the dimmer and a blue wire for the antenna. I'm not sure what to do with the black wire. I know I need it since it is the ground but I don't ever remember grounding it to the actual car. That seems a little odd. So will someone please enlighten me since I am retarded. Thanks. :yourock: