OK, I'm now part of the rear fog light club!
After fighting with the dummy light, I was finally able to get to to removing some interior panels and running wires.
My hookup was simple since all I wanted the light to do was go on and off. Using the wiring harness with relay and switch available from The Z Store, I ran my wiring through a grommet on the passenger side where I spliced the hot wire the driver side license plate light wiring as demonstrated earlier in the thread. Then, I ran the wires and plug for the fog lamp between the aluminum bumper and styrofoam behind the rear fascia. I facilitated this route by popping off the rear tow hook plate and cutting out a channel in the styrofoam so the plug could slide down easily. This keeps everything neat and safe from the heat of the exhaust.
By the way, when I popped off the plate covering the tow hook mounting point, there wasn't a hole to screw the tow hook into. Weird.
