All this, however ...

Everything was there even a small plan for wiring. Bin extent have coped as an absolute novice.
When connecting are also instructions of the subwoofer and amplifier helpful (unfortunately I had not bought as second-hand)

The only weak spot are the terminals which act very cheap and were not easy to get to the line or to attach.

The RCA cable to make a good impression, but should be provided sufficient space behind the radio because otherwise there is a cable break. With nothing has happened even though I was working properly with force. (Trying to say by itself break the not starting so as some describe here)

Used may be helpful, I habs in Octavia 1Z