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CAUTION! 

 All accessories, switches, climate 

controls panels, and especially air bag indicator 

lights must be connected before cycling the 

ignition. Also, do not remove the factory radio 

with the key in the on position, or while the 

vehicle is running. 

AX-PO904

I N S TA L L AT I O N I N S T R U C T I O N S

AxxessInterfaces.com 

© COPYRIGHT 2018 METRA ELECTRONICS CORPORATION 

REV. 2/27/18 INSTAX-PO904

TOOLS REQUIRED

• Wire cutter • Crimp tool • Solder gun • Tape 
• Connectors (example: butt-connectors, bell 
caps, etc.)

TABLE OF CONTENTS

Connections to be made .......................................2
Installing the interface ..........................................2

Porsche

 

(with M.O.S.T. 25 amplifier)

 

Data Interface 

2004-2009

INTERFACE FEATURES

INTERFACE COMPONENTS

•  Provides accessory power
•  Retains R.A.P. (retained accessory power)
•  Designed for amplified models

•  Provides NAV outputs (parking brake, reverse, speed sense)
•  Retains balance
•  Micro “B” USB updatable

•  AX-PO904 interface
•  AX-PO904 amplifier interface
•  AX-PO904 harness

APPLICATIONS
PORSCHE

911 (997) 

2004-2009

Boxster (987) 

2004-2009

Cayman (987c) 

2004-2009

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