Install guide

Section 2 Satellite Radio Module

This section will describe how to install an OEM Audi satellite radio module in a vehicle that is not

pre-wired for it from the factory. These instructions are specific to Audi vehicles with the CD Changer

connection plug in the trunk. First, a note about this installation method. The SAT radio tuner uses

the same wires to send audio signals to the headunit that the external CD changer (CDC) cable uses.

If a phatbox or ipod adapter is plugged into the CDC port, the installation of the SAT module will

require more work than is described here. There is a document on my website www.nsxjr.com

that

details how to install sat radio with a CDC or other device that uses the CDC port. The audio wires

are the only potential conflict between the SAT module and the CDC port since they use separate

connections for power and data.

To resolve the audio wire conflict, the SAT radio has a built-in audio pass through for other devices. Three wires

called CD-In Left, CD-In Right, and CD-In GND. These work such that when the SAT module is on, it sends it’s

audio to the headunit and blocks out anything else. When it is turned off (i.e., switch to another source on the

headunit), the SAT radio allows the signals from the audio inputs to pass through to the headunit. The Audio-IN

pinouts can be seen on the SAT radio wiring diagram below. These audio inputs are where to connect the three

audio wires (L, R, GND) from a Phatbox or iPod adapter. There’s a schematic of the SAT and CDC connections

together in Appendix E.

2.1 The Basics: SAT Radio Tuner Wiring Info

There are four categories of wires the SAT tuner requires:

• Power: Two wires in their own connector. Main source of power used to operate.

• Audio: Three wires: Left, Right, and Audio Ground. These send the audio to the headunit.

• Data: Two wires: CAN H and CAN L. For communication with the headunit of all other data.

• Antenna: Two wires: brown and green FAKRA terminals that the antenna connects to.

A: Audio and Data Connector

1. CAN L

2. CAN H

3. Audio In L

4. Audio In R

5. Audio Out GND

6. Audio Out L

7. Audio Out R

8. Audio In GND

B: Power Connector

1. Kl.31 (GND)

2. Kl.30 (battery power)

3-8. N.C.

C: TER Antenna Connector

D: SAT Antenna Connector