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6

5

4

Gain access to the factory radio’s rear panel.

 The CRZNAUX2 connects directly 

to the rear panel of the factory radio. Full or partial disassembly of the dash will be 

necessary. If you are unsure of this procedure, please consult a factory service manual or have the work 
performed by a mobile electronics specialist. Pay special attention to warnings or instructions regarding 
working near airbags, other safety devices, or security systems.

1

1

Connect the appropriate CRZNAUX2 harness to the factory radio. 

The 

CRZNAUX2 comes with two vehicle-specifi c harnesses. Carefully review both 

harness options on page 3 and compare both harnesses with the connectors on your factory radio’s rear 
panel. Use the harness that matches your radio’s connectors. Plug the male connector of the appropriate 
CRZNAUX2 harness into the matching location on the factory radio’s rear panel.

If your vehicle requires 

Harness Option B

, shown on page 3, you must also connect the attached 

yellow wire. Connect the yellow wire to a co12V power source (vehicle battery).  We 

DO NOT

 

recommend the +12V constant in the factory radio harness due to the possibility of excessive voltage 
drop during vehicle starting. 

2

2

Assemble the components shown on page 2 and connect them to the 
CRZNAUX2 module. 

Use the diagrams on pages 2 and 3 to assemble the 

components that will connect to and control your Zune device. 

Power connector wiring.

 Connect the black wire of the power connector shown on page 3

to a clean, bare-metal chassis ground. When in doubt, measure the resistance between potential grounding 
points and the vehicle battery using a multimeter. Choose a grounding point with equivalent resistance 
as other grounded components in the audio system. Connect the red wire to a +12V switched (ignition) 
power source. This wire requires a 12V, 1500mA inline fuse. MAKE CERTAIN THAT REPLACEMENT FUSES 
MATCH THESE SPECIFICATIONS.

3

3

BEFORE YOU BEGIN:

Turn the ignition off.

1. 

Ensure the factory radio is turned off.

2. 

Installation

Installation

Operation

Mount all components. 

Mount the CRZNAUX2 module behind or under the dash 

(mounting hardware not included). Be careful not to drill into wiring or vehicle 

mechanisms. You are solely responsible for securely fastening the CRZNAUX2 in your vehicle. Make 
certain that wires and cables cannot be damaged by screws, clips, or sharp, exposed pieces of metal.

Ensure that the Zune dock connector is left in a convenient place for connection to your Zune device. 
Plug the Zune dock connector in straight. Do not insert the connector at an angle or wiggle the connector 
during insertion.

Please read the 

Operation

 section on the following page and test the installation before reassembling the 

vehicle dash, trim panels, and audio systems.

4

4

Controlling your Zune device

The CRZNAUX2 will not provide control of your Zune device unless you attach the optional remote, which 
is available separately. Please visit www.soundgate.com or your local mobile audio dealer for details on 
the CRZNAUX2 remote’s availability.

Activating the CRZNAUX2

Turn on the ignition and factory radio.

1. 

Ensure that your Zune device is connected and playing audio.

2. 

Wait several seconds for the factory radio and the CRZNAUX2 to synchronize. Press the 

3. 

MODE

button 

on 

your 

factory 

radio. 

      

The factory radio’s display will report 

Disc 1

,

 

Track 1

—you should hear audio from your Zune 

device through your vehicle’s audio system.

To deactivate the CRZNAUX2 and switch your radio back to its normal mode, simply press the 

4. 

MODE

 

button.

NOTE

If the radio’s display does not report 

Disc 1

Track 1

 after pressing the 

MODE

 button and 

you do not hear music from your Zune device, turn the radio and ignition off. Disconnect 
the CRZNAUX2 harness from the factory radio’s rear panel.  Wait 30 seconds, then 
reconnect the harness. Repeat steps 1–3 above.

This initialization process, if necessary at all, will only need to be performed during the 
initial installation.

Why SoundGate Dealers 
have the edge...

The technologies used in today’s vehicles 
are as sophisticated as any laptop 
computer. At SoundGate we believe these 
new technologies are full of opportunities 
for mobile electronic dealers across the 
nation. We make it a high priority to not 
only research these new systems, but to 
understand them and their impact on the 
aftermarket car audio industry. Armed with 
this knowledge, we are well equipped to 
help you integrate new components into 
these systems with our innovative, high-
performance interfaces and unparalleled 
technical support.

Ask your autosound 
specialist about 
these other exciting 
SoundGate products...

Auxiliary Input Interfaces and Docking 

• 

Stations which allow you to input 
audio from MP3 Players, DVD/Video, 
Satellite Radio, and more to OEM 
and aftermarket car audio systems

High-performance Radio Replacement

• 

Interfaces for seamlessly 

• 

integrating new receivers or CD 
players into OEM audio systems

Competition-Grade Interfaces 

• 

for adding amplifiers

Remote Audio Control Interfaces 

• 

that let you control aftermarket 
receivers and CD players from 
your factory rear seat, or steering-
wheel mounted audio controls.

And many others!

• 

www.soundgate.com

Zune™ and the Zune™ logo are trademarks of the 
Microsoft group of companies.

Copyright© 2004-2008 SoundGate®. All Rights 
Reserved. SoundGate® is a registered trademark of 
Stillwater Designs, Inc. All other trademarks are the 
property of their respective owners.

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