Bandit, I see a bunch of different ones im not sure which will work. None of them say for Android devices (that I can seem to find). I found this one:
Will this work? It does say supports a separate audio signal though and in the pic looks like it has a plug that will work in the jack on the N7. Im also curious if it will plug right into the factory Bose system. According to this site:
It should work.
EDIT: Ordered the above unit.