I just bought a 2003 Performance package 350z. No bose, just cruise control on the steering wheel. i’m having trouble with the head unit wiring. the car used to have after market subs before i got the car, but they took them out. the power cable isn’t connected anymore, and they had a white cable ran into the green positive speaker cable, and a black one into the negative, but i took those out and fixed back the factory speaker wires and it still won’t come on. i’ve tried rewiring the head unit many times using an adapter but it still won’t work. can someone please give me the right color codes to match together and show me where you put your grounds?

 

Welcome- I moved your thread to a more appropriate forum. Without looking at the head unit and analyzing the hacked up cabin harness, my guess is nobody behind a keyboard is going to be able to show you where the wires go. Have you simply paid a stereo installer to take a look at it?

 

the actual factory harness isn’t cut up. i have the adapter for it that plugs into the factory one. i’m just not sure why all of the colors are matched and it won’t come on.

 

Let's start with the basics. Is your head unit powering on?