How to install a Prodigy brake controller

[Airstream 65]

I'm trying to install a Prodigy on my 2003 Suburban. I have the Tekonsha (3015P) GM brake control harness for the 2003-2005 model year, but the plug under the dash by the parking brake pedal does not match up with the plug on the wiring harness, am I looking in the wrong place? I don't think this truck has ever towed a trailer, but it does have the factory tow package.

[Airstream 65]

And now to answer my own question. After an hour of searching, I found this:

Tekonsha Prodigy Brake Controller Install

It's a complete description (with pictures) on how to install a Prodigy brake controller in a late model Chevrolet/GMC truck.

Hmmmm, never even thought to look for the plug behind there!!