Car and me NOT getting along
The Bose system is completely different from the Monsoon system (or any other standard radio). It has a special head unit with high-impedance, low-level output to speakers that each have individual amps built in. The speaker/amp assemblies are individually "tuned" for their location in the car.
What are you trying to do with the system? About the only thing you can do to a Bose system without a major overhaul is add an amp. Replacing the head unit without changing the speakers requires a special adapter.
http://www.logjamelectronics.com/piehrcgm21.html
I had the same problem with my car, my head unit worked, but had no sound. I'm going to be purchasing one of these little adapters sometime soon, considering I haven't had a CD-Player in my car since I've owned it, last May.
Now, adding sail panel speakers is a different issue. The easiest way would be if your HU has pre-amp output that you can run through an external amp. Or, you could just tap into the speaker-level output before the Bose adapter but that might not give you much volume. Besides, why put in sail panel speakers at all? You already have a front soundstage and a subwoofer - the rear fill wouldn't really improve the sound much.






