There's nothing in any service manual about putting back something that is already supposed to be done. The radio will just bolt in but it's the wiring you have to look at. Some people will cut off the original plugs, then splice in the harness for the new radio. That leaves a chopped up mess if they take the radio out. What you'd need to do then is visit a salvage yard and snip the original plugs. All you have to do is match up the wire colors, then splice them together.
I don't recommend butt connectors or Scotch-Lok connectors. The only way I repair wires is to splice and solder the joints, then seal them with heat-shrink tubing. Never use electrical tape in a car. It will unravel into a gooey mess on a hot day, and splices will touch and cause shorts.
Be aware that VW has built in some tricks to cost you money after the sale. One of those is needing to enter a code to unlock the radio. I've been told by a couple of very knowledgeable people that you get three attempts to enter the code, and if you guess wrong, the radio will be permanently locked. At that point, throw it away! Other people have told me the dealer can unlock the radio, but you know they won't do that for free.
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Wednesday, February 4th, 2015 AT 2:29 AM