This was used to install a Parrot CK3100 Bluetooth kit in my VW and made it so easy it was all done in around 30 minutes. Plug and play is the way to go and if you ever need to take it apart you can do that is the same amount of time.
Instructions were not great but then again I am a man and we don't use them too often anyway so not really an issue there.
Works great and wished i had done this sooner.