I purchased a Pioneer DEH-3400UB stereo and wiring harness. I have the 350z wiring diagram but I can't find a wiring guide for the Pioneer DEH-3400UB. I tried matching up the colors but I'm only getting audio through the front right speaker & my head unit flickers.

 

Hmmm...what wires do you need to know? If your head is flickering then it could be a ground or insufficient power to the deck. If the rears aren't working then your factory amp could be pooched on those channels (assuming that it is Bose).

Have you sought help from your local car audio shop? You may want to give them a try if you are concerned about wiring issues.