You've gotta splice the wiring harness adapter for the car to the decks harness. Its not difficult and doesn't need to be done in the car or even with the deck attached.
USB cable can be fished through on the right side of the ashtray. If you just stick your hand in the hole where the deck is supposed to be when you have it out, you'll find a spot towards the front of the cavity on the right side and the USB cable should fit right through there.
I've been to a store pretty much like BB but with employees on comission... they car audio guy didn't know a thing. He'd say, "i've had this and that" so I asked, what do you have now, "I don't have a car". Thats like working at a car parts store yet never working on cars or owning one.
