Sorry for the delay but life got in the way. I ended up returning the electrical device I purchased from HitchFinders.com because it was not a plug/play module. I was able to purchase the plug/play wiring harness from my Lexus dealer without any hassle. The part was $90!
Thanks to the great installation instructions/tips from this thread, I was able to easily remove the back storage compartment, plug in the wiring harness, test the lights and put it all back together in an hour.
thanks
jml