2007, or where can I find one? Why, if the towing package is a factory option, Why not install the harness also (at the factory), so it looks as good as the rest of the wiring?
The one I got was installed by the dealer, and had to tap the 12 volts, with a wire directly from the battery with a fuse ,all the way to the back compartment (tools), works, yes, pretty, no.