Question with BOSE Acoustimass and reciever

[katiehlvr1]

Ok I could use a tech advice here in a bad way. So here goes and I hope someone can help me out.
I have a Sony Reciever (the one with all the options just a bit bulky) I have all speaker inputs (wire) and then I have a sub JACK. Now from past experience in order for my DD light to come on, i need to plug a sub into this jack. My problem is this. I have the bose acoustimass 10 system (yea some love it some hate it) I LOVE IT.
Anyhow, there is no jack on the back of the module and the only way of achieving this is to put another 100 dollars into a sub when I really do not need it because i live in an apartment and to be quite honest it is just to much. I will have people complaining all over the place. I live in FL and as you know we have a retired community down here so I am trying to stay away from buying another sub for money reasons and neighbor concerns. Is there anyway that I can send a signal from my bose (so called Bass Module to this jack or any type of Magyver hookup for the Sony to see that there are truly 5 speakers running and a sub? In short I have speaker inputs on my receiver (wire) front left center rears then a sub jack. In order to get 5.1 to light up i need something going into this jack to show I have a sub. With the way the bose system is setup you do not have a jack feature. Surely there must be a way to overide this. Maybe somoene has even been in the same boat. If I can get this solved I will for sure be bringing out the Sony receiver. Let me some real tech advice on what I can do here. If anything???? I desperate need.
Thanks
Corey