K
NOWLEDGE IS
P
OWER
E
nhance your installation and fabrication skills by
enrolling in the most recognized and respected
mobile electronics school in our industry.
Log onto www.installerinstitute.com or call
800-354-6782 for more information and take steps
toward a better tomorrow.
®
Metra recommends MECP
certified technicians
IMPORTANT
If you are having difficulties with the installation of this product,
please call our Tech Support line at 1-800-253-TECH. Before doing
so, look over the instructions a second time, and make sure the
installation was performed exactly as the instructions are stated.
Please have the vehicle apart and ready to perform troubleshooting
steps before calling.
AxxessInterfaces.com
© COPYRIGHT 2018 METRA ELECTRONICS CORPORATION
REV. 9/28/18 INSTGMOS-MOST-02
I N S TA L L AT I O N I N S T R U C T I O N S
GMOS-MOST-02
Attention!
If the interface loses power for any reason, the following steps will need to be performed again. Also, if installing an
ASWC-1, connect it after you initialize and test the interface/ radio, with the key in the off position.
• Turn the key (or push-to-start button) to the ignition position and wait until the radio comes on.
Note:
If the radio doesn’t come on within 60 seconds, turn the key to the off position, disconnect the interface, check all
connections, reconnect the interface, and then try again.
• Turn the key to the off position, and then to the accessory position. Test all functions of the installation for proper operation,
before reassembling the dash.
• With the vehicle and radio turned on, turn the volume up 3/4 of the way.
• Locate the end of the GMOS-MOST-02, where the 16-pin harness with stripped leads connects to.
• With a small flat-blade screwdriver, adjust the potentiometer clockwise to raise the audio level; counterclockwise to lower the
audio level.
• Once at a desired level, audio level adjustment is complete.
AUDIO LEVEL ADJUSTMENT
PROGRAMMING
