good morning - I working the new radio replacement thing right now. My plan was to run copper to the Amp and tie into the factory copper to the speakers there. That being said - i have a C4S CAB. I can not find a sub. Unless it is well hidden. It has a pair in the dash, a pair in the door, and a set that looks like the dash set in the rear. No Sub. I say that because i have identified 5 pairs of speaker wires. ??? A wiring diagram of the BOSE MOST might shed some light - any help in deciphering this?