No, although the installer connected the unit correctly, I'm afraid that he did not note which pins at the amp connector correspond to which speaker connections. As I asked, he connected the front pre-outs to the door speakers and the subs pre-outs to the subs. the system sound really great with the factory amp and speakers, and it's nice to have some control of the sub levels. I also had the Kenwood KNA-G510 Garmin GPS Nav, KCA-BT200 Bluetooth, CCD-2000 back-up camera, KCA-iP300v iPod connection and the XM receiver unit connected. The main audio receiver unit fit under the passenger's seat and the rest of the components fit next to the factory amp, under the passenger floor. While the sound quality is excellent and the volume sufficient, it doesn't seem to have quite the volume as the factory unit. The pre-outs on this unit are 5v, so maybe the factory HU is a bit higher voltage than I've read on this forum. I think the next step will be another amp and some speakers. The installer said that there were some nice Boston Acoustics that would fit right in. And yes, the speed sensitive volume does seem to work with new HU.
The only thing that I'm not crazy about is the convoluted menu system that Kenwood uses. I have a Pioneer AVH-P7600DVD in my Intrepid that has a logical, easy to use menu system, but I went with the Kenwood for the Garmin hard-drive based navigation. Overall, I'm pretty pleased with the system. Sorry I didn't get the answer to the elusive amp connection question! Thanks again for everyone's input.