Ok so my wife bought me an unbranded, chinese double din radio. I just got my 04 350z last week it does not have the bose system in it. It had a single din radio in it that worked periodically but it seemed to be a power issue. Just got it hooked up and it powers on perfectly every time, but I have no sound through any of my speakers. I have checked all my fuses and don't have any blown, all wires are connected per the diagram. I am lost. Is there a factory amp that I'm missing for z's without bose? Any help would be greatly appreciated. Thanks, Deven.

 

Please don't double-post.

 

Some aftermarkets require you to run your own ground, which may power the speakers... Are there any left over wires from the head unit ?