Joined: Dec 2006
Location: Highlands Ranch
I've done this. Some cars do not have the proper wiring, some do. Use a small screwdriver to carefully remove the blank, where the buttons would be. If there is a plug with wires plugged into it in the back of the blank, you're good to go.
You need to order both the cluster, and the switch assembly that will go where the blank is. You'll need to give your dealer your VIN#, and an estimate of your odometer reading when you order. This number is what they load into the cluster.
It is pretty much plug and play, but the wires do have to already be there, and the dealer does need to load your info into the new cluster using the tool Stlwagon mentioned.