I have one sitting on my work bench ready to go in with a new radio. I did plug one of the inputs into the wrong location on the Maestro module the first time I set it up so there was that issue. Otherwise it was follow the instructions and plug and play. If you have a Windows 10 PC you may have to look up a work around to flash the USB firmware onto your module. Once I got that done it was super easy.

After I fixed my mistake it worked first time I plugged it in and everything works as it should. Even my display above the radio works and shows the artist and song when I'm playing mp3 files through the radio. I'm rolling a 2011 FX4.