How to add a signal processor to a bose system

[Bigrick31]

I have an 04 escalade ext. It has factory navigation 6 disc changer bose ect. I want to add an aftermarket amp and subwoofer to the bose system and after doing some research I concluded that the Rockford Fosgate 3sixty.2 would be my best bet. I would have changed out the stock HU but the cost of a new navigation plus the cost of all the adapters I would need to retain factory controls just wasnt worth it to me also I set a budget of $800 for building materials and audio gear. Ill probably upgrade the bose speakers and add an amp to power the new speakers but for now I want to leave the stock speakers powered by the bose amp and just add a subwoofer. I was talking to the reps at crutch field and all they could tell me was I needed to cut the speaker wires that go into the bose amp and run them to the 3sixty.2 but thats where im lost. If I cut the wires and run them to the 360 then how is the bose amp going to power the speakers? I asked if there were any adapters or harnesses I would need or could buy to simplify the install and they said that none existed. Has anyone installed a Signal processor such as the 360 to their factory bose system, If so was there any extra accessories you needed for the install? Were you able to have the bose amp power the stock speakers? How did you do it? Anyone have a wiring diagram for the bose system so I can identify which wires I need to mess with?

[mrgrim]

You can get a Pac adapter that plugs into the back of the radio that will give you rca outputs with out bypassing the bose amp.

[Bigrick31]

So that would allow me to run a set of RCAs to the 360s input then run another set of RCAs form the output to my amp? Im guessing that I wouldnt be able to use the 360 to adjust the eq of my door speakers though?

[Bigrick31]

Got someone at crutch field that knew more than the last person. What they said to do was take the wires that run from the bose amp to the speakers and tap into them basically making a Y or T tap so that your wires now go from the bose amp to a Y where one end of the Y goes to the speakers and the other go to the 360. Now on a Bose system you have a set of wires for the tweeters in the pillar a set for the front door speakers and a set for the rear door speakers. Heres how Rockford Fosgate recommends connecting the wires to the 360

Run:
tweeters into the 3Sixty FRONT channels
mids into the 3Sixty REAR channels
(optional) rears into the sub/center channels

When running OEM integration, choose YES to sum the inputs, 3Sixty will handle the rest.

Note: The 3SIXTY should be wired to constant 12V power only. Some 3SIXTY owner's manuals indicate wiring to switched power, but this is incorrect.