Just thought to take a few snaps of this in case anyone else is thinking about doing it. One note....you have to use the adapter for the nine volt battery and plug it in to the PCIII in addition to using the USB cable when uploading the map. It wasn't straight forward on that point, I thought. This is what the software interface looks like you get with the PCIII. Will plug it into the bike this weekend and post how the bike behaves.
Hope this helps someone.