gt4

I understand I will need a potentiometer to tone down the volume into the factory radio. Which contacts do I connect the wires? Also, what kind of potentiometer you will need? I read that someone else used the 1k one. The only ones I can find locally were kinda bulky and about an inch long. Are there smaller ones I can use.

uber_ar

First a question - which headunit do you have? If it's a symphony II then you need to connect the parrot audio out to PIN 3 and 4. The parrot mute wire to PIN 1. These pins can be found on Connector IV (RED 10 PIN MULTI-PIN CONNECTOR)

You don't need a potentiometer... volume feeding your headunit is controlled by your wireless phone volume control.