So I have just installed my new pioneer 4400bh, today, along with PAC mazato Bose amplifier and a steering wheel integration kit. For some reason I'm not getting sound. The unit powers up but nothing from the speakers. I have triple checked my connections and everything appears fine. There are rear speaker wires on my head units harness that are not on the mazato. Am I to hook these up? If so to what color wires and are they on the oem harness? Is this cuasing me not to get sound. I called PAC and the dude said that this is just a switch and shouldn't effect my speakers, but I find this hard to believe if the unit it self is defective then I would think I should not get sound.