Welcome to the forum!
Both of my 09's also have the tow package. As noted by pdubois64, there is just a little four plug rubber connector on the left side of the receiver. That's all that come with them and there isn't a wiring harness provided for the trailer. I just got the little connector for the trailer at the parts store and followed the simple directions. Other SUV's I've had in the past have come with trailer wiring etc. Not with the Jeeps.
Mine 09's have a lifetime drivetrain warranty. I believe that only goes to the first owner. The remainder of the 3yr, 36 should be good though!
Best of luck to you!
"Take nothing but memories,
leave nothing but 'light tread marks'."