I have an aux out from my mp3 player and I want to know what wires do you connect from the aux out(on the mp3 player) to the radio wire harness to get sound?

 

So you're just wanting to hook your MP3 player up to your head unit? Is your "aux out" from your MP3 player a 3.5mm audio cable? If not, what is it? Is your radio stock? If so, it Bose? Aftermarket?

We need more details to give you any sort of help

 

No hu right now just the harness

 

stock bose speakers and amps?
you will need something to push the speakers, be it the bose speaker/amp combo, or aftermarket speaker/amp combo.