This eliminates the need to track down wires or test polarity. Of course when you are upgrading your Passat speakers, this wiring guide helps you connect the right wires. This Passat stereo wiring schematic covers the year ranges of 1988 to 2012 or more specifically the 3rd generation (B3) and up. When you’ve got a Passat radio upgrade in mind, you need our Passat stereo wiring diagram to do the job yourself. That doesn’t stop people from upgrading their Passat stereo, by either installing a new radio or Passat speakers. Easily one of the most popular Volkswagen models in the past few years, the Passat comes with a robust sound system.
