Hey, I think I've sorted it out. There is a hole next to the wire to the hub. The spade connector is invisible deep in the hole.
I kept searching for pictures, and found one from biketouringnews.com that shows the tail light connections. It doesn't mention the connections, but you can see them if you look carefully. In case anyone else is interested, here is a link (that I hope works):
http://biketouringnews.com/wp-conten.../P21432171.jpg