Alright here we go. I just purchased a 1990 300zx from a guy that lived close to me for about $2000. It was a steal of a deal so i couldnt resist. What I have going on now is a jumbled mess where the radio used to be(Guy didnt know what the hell he was doing). So needless to say everything is messed up. I have a picture of what it looks like can anyone get a color coded diagram because the ones that I have looked up are only for the radio and none of them match up to the wires I am looking at. For instance the Switch 12V+ is blue and has no power coming from it... Or at least what I can tell.

My next question is would any of those wires mess with the alarm system that is on the car? As far as the locking of the doors(power). Anyways any help would be appreciated. Thanks

 

To attack your second question, the radio usually has a wire going to it that's constant power (for the clock), so maybe the alarm system ties into that.