Audio Systems: Hook up to pre wired surround speakers, bose, model number

Question
I am installing on the ceiling 5 Bose cube speakers to pre wired house.  There are 12 wires (no color code)of different sizes at the junction box.  How do I determine which wires to attach to the adapter kit?

Answer
I am well versed at Bose contractor freespace systems. There is a different mentality when it comes to consumer audio. They like to sell proprietaty systems with no instruction for pre wiring home installs. The best I can do for you is if you give me the model number of the system I can try and get the info from Bose pro division.