The delivery was very quick, properly packaged. The installation instructions are a bit thin, but went as not experienced hobbyists mounting very quickly (about 10 minutes): The connectors are virtually not to be confused, only to the connection of the remote control line I had to briefly consider: the blue-yellow cable Radios (Remote Control) had to be connected to the brown cable of the adapter with the included (!) squeeze connector. The round Hosiden connector (4-pin, black) remained unused.
The first functional test ran flawlessly. A little nervous still cost the cable tidying, so the radio could come to his place again. In sum: the radio and steering wheel controls function properly! The cable is processed very solid, the connectors are fit.