You really don't want to do this. The kit sells for around $250, but if you do a little homework you can find all the same parts individually (search MoparpartsAmerica or jeep4x4center) for less than $100. (Closer to $80 if I remember correctly.)
Then if you want to install it yourself, there's a thread over on jk-forum.com complete with pics to show you how to do it. Takes about 30 min.
Or, if you're worried about voiding your warranty like I was, you can take the parts to your dealership and have them do the install.
So, I got the parts and had the cruise control installed for about $100 less than just the parts kit would cost.
One more thing. After I got the cc installed I started getting erroneous fault lights. I mentioned that to the dealership at the next service and they did a little magic on the computer.... no more fault lights.