Did you buy a car radio for an Audi, and does your Audi have a sound amplifier in the back? Then there is a good chance that you will have to make a small adjustment, because otherwise not all your speakers will work.
1. Connect the supplied tulip plugs (white) and (red) together.
2. Below in the photo you see an Audi plug that comes out of the vehicle. Check if your plug has a metal pin in the socket we have circled. If you see a metal pin there, then you need to send switched 12V to it. You can tap 12V from the fuse box or via our car radio. The red acc wire of the car radio is switched 12V. So you can tap 12V from this.
