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-ADGM03
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. 7/2/18 INSTAX-ADGM03
INTERFACE FEATURES
INTRODUCTION
TOOLS REQUIRED
• Crimping tool and connectors, or solder gun, solder,
and heat shrink • Small flat-blade screwdriver
• Tape • Wire cutter • Zip ties
TABLE OF CONTENTS
Connections to be made
For models
without
an amplifier ................... 3-4
For models
with
an analog amplifier ............4-5
For models
with
a digital amplifier ...................6
12-pin pre-wired ASWC-1 harness ......................7
DIN jack ................................................................7
Installing & programming the AX-ADGM03
AX-ADBOX1 ...........................................................8
AX-ADBOX2 ......................................................8-9
Adjusting the AX-ADGM03 ................................... 10
Extra features ................................................... 10-11
GM
Data Interface
2000-2013
APPLICATIONS
See inside front cover
• Provides accessory power (12-volt 10-amp)
• Maintains the retained accessory power
(R.A.P.) feature
• Provides NAV outputs (parking brake,
reverse, speed sense)
• Retains chimes
• Retains OnStar / OE Bluetooth
• Adjustable OnStar level
• Retains RSE (rear seat entertainment) *
• Retains satellite radio
• Retains the factory AUX-IN jack
• Pre-wired ASWC-1 harness (ASWC-1 sold
separately)
• Can be used in non-amplified, or analog/
digital amplified models
• Retains balance and fade†
• Micro “B” USB updatable
The AX-ADGM03 harness is designed for, and must be used with, the
AX-ADBOX1 or AX-ADBOX2 interface (sold separately). Please refer to the
AX-ADBOX1 or AX-ADBOX2 for the 16-pin connector with stripped leads.
* Only for models that have the RSE controlled through the factory radio. Not for models that have an external power button at the RSE.
† To retain fade in digital amplified models, use the AX-ADBOX1
INTERFACE COMPONENTS
• AX-ADGM03 harness • 4-pin to 4-pin resistor pad harness
