Well, I am taking my Jeep on a long trip next weekend, so I thought I'd get off my butt and install the MOPAR cruise control in my JK. Here is a write-up. I got my kit from the local dealer, $225. I could probably have found it online cheaper, but I didn't have to pay shipping from the dealer and he got it for me next-day. Your mileage may vary, here.
First, the obligatory disclaimer, these instructions are purely for entertainment value and shouldn't be used by anyone for anything. If you attempt any of the feats described herein, you're own your own. As part of the install you'll be working with your airbags, which should be consider explosive devices. I'm not responsible for any injury to you or your Jeep. So there.
Now, you'll need the following tools:
10mm Box-end wrench
T20 Torx Socket (make sure it's a socket, you'll need it)
Socket extensions in various lengths (3", 6")
Stubby length standard screwdriver with a wide blade (you'll see)
Needle nose pliers
Contents of the kit:
One black steering wheel shroud
One beige steering wheel shroud
One black cruise control arm
One wiring harness
Two polished self tapping screws
One black self tapping screw