Warp,
Thanks. Yeah, it's the connection to the bike that threw me. I watched the installation video on the CD that comes with the kit and expected the cable connection to be obvious. I poked around under the seat for a while but couldn't find anything that looked like the cables on the PCIII. The real pain is that the garage where I keep my bike doesn't allow me to work on it there, so I'm trying to do this in the street in front of my apartment.
So, when you say "under the seat, at the back" are you referring to the area behind the tool kit, or further back in the tail?