ok, I hope I can be some help on this so maybe somebody can help me.
2. You need to check for the harness under the bumpers to tie this into.
3. You will need to have the powernet cpu updated at the dealership with the flash code that comes in the instructions.
4. If you don't have the harness, fear not, you can buy a body harness or rear harness and tie into what you have, but its a lot of crap to replace.
5. Dash module is needed- I don't have that number now, but I can get it, so you have the two buttons in the dash you can turn on and off the parking distance control. I have one if you really have every other option, I may be wiling to trade.
What I am currently doing is I have a sport RT - came with heated seats, leather and cloth, power drivers only. I got all leather brand new seats from a 2014 Laramie Eco Diesel, I have vented front seats, heated front and rear, and the trailer option brake was added. heated steering wheel I already had. I replaced all the seats and the entire console harness so I now have heated rear seat buttons. I then replaced the module in the dash with every freaking button, but parking doesn't work as I don't have that installed. I had to replace my entire body harness, or most of it as I had no rear power for rear heated seats and I didn't have the correct pin configuration behind the dash module to recognize all those buttons. From there once I had power and network wires everywhere the fun began getting the right codes in the computer. Currently I am still awaiting the codes for the vented seats, my BCM wont take them for some reason and I am now looking into either a whole new BCM or a call to Dodge engineering. My dealership was willing to learn with me on this project.
So, if you have all the buttons you want but not parking distance, I have all the buttons as well, and never plan on using parking distance. I don't know the value of the modules as I bought the whole kit from a guy in Detroit that sells parted out Rams after testing and beta trucks. This is not a project for the faint of heart but its really nice to have options that cost 60K+ on a truck I only paid 45K for, but I would never do this again- hell no, special order the right truck and lease it. Hope that helps!
PS- selling all the nearly new seats
all black, like new, truck has 1200 miles on it.