Axxess GMOS-MOST-01 Installation guide

Brand: Axxess

Model: GMOS-MOST-01

Type: Installation guide

Installation instructions for GMOS-MOST-01

CAUTION: Metra recommends disconnecting the

negative battery terminal before beginning any

installation. All accessories, switches, and especially

air bag indicator lights must be plugged in before

reconnecting the battery or cycling the ignition.

NOTE: Refer to the instructions included with the

aftermarket radio.

• Providesaccessorypower(12-volt10-amp)

• RetainsR.A.P.(retainedaccessorypower)

• RetainsOnStar/OEBluetooth

• Retainswarningchimes

• ProvidesNAVoutputs(mute/parkingbrake/reverse/speedsense)

• PrewiredASWC-1harness(ASWC-1soldseparately)

• Retainsfactory3.5AUX-IN

• UsedinMOST®amplifiedapplications

• Adjustablegaincontrolforoverallvolume

• Highlevelspeakerinput

• Retainsbalance

• MicroBUSBupdatable

FEATURES

• Cuttingtool•Crimpingtool•Tape•Connectors

(example:butt-connectors,bellcaps,etc.)

TOOLS REQUIRED

GMOS-MOST-01

GM 2014-up MOST®

Amplifier Interface

• GMOS-MOST-01interface•GMOST-MOST-01

harness•16-pinharnesswithstrippedleads

INTERFACE COMPONENTS

APPLICATIONS

CHEVROLET

Silverado1500 2014-up

Silverado2500/3500 2015-up

Suburban 2015-up

Tahoe 2015-up

PONTIAC

Sierra1500 2014-up

Sierra2500/3500 2015-up

GMOS-MOST-01

From the 16-pin harness to the aftermarket radio:

• Connectthe(2)Redwirestotheaccessorywire.

Note: If using the optional ASWC-1 or AX-LCD, there will be an accessory wire

there to connect as well.

• ConnecttheOrange/Whitewiretotheilluminationwire.(Iftheaftermarket

radiohasnoilluminationwire,tapeofftheOrange/Whitewire).

• ConnecttheBlue/Whitewiretotheampturnonwire(thiswiremustbe

connectedtohearsoundfromthefactoryamplifier).

• ConnecttheBrownwiretothemutewireoftheaftermarketradio.Iftheradio

hasnomutewire,tapeitoffanddisregardit.

• ConnecttheWhitewiretotheleftfrontpositivespeakeroutput.

• ConnecttheWhite/Blackwiretotheleftfrontnegativespeakeroutput.

• ConnecttheGraywiretotherightfrontpositivespeakeroutput.

• ConnecttheGray/Blackwiretotherightfrontnegativespeakeroutput.

• ConnecttheGreenwiretotheleftrearpositivespeakeroutput.

• ConnecttheGreen/Blackwiretotheleftrearnegativespeakeroutput.

• ConnectthePurplewiretotherightrearpositivespeakeroutput.

• ConnectthePurple/Blackwiretotherightrearnegativespeakeroutput.

Thefollowing(3)wiresareforaftermarketmultimedia/navigationradiosthat

providethesewires(ifnotrequired,tapethemoffanddisregardthem):

• ConnecttheLight Greenwiretotheparkingbrakewire(ifapplicable).

• ConnecttheBlue/Pinkwiretothespeedsensewire(ifapplicable).

• ConnecttheGreen/Purplewiretothereversewire(ifapplicable).

From the GMOS-MOST-01 harness to the aftermarket radio:

• ConnecttheBlackwiretothegroundwire.

• ConnecttheYellowwiretothebatterywire.

• ConnecttheRCA’stotheaudioAUX-INontheaftermarketradio(ifequipped).

Note: (a) This will allow you to retain the 3.5 AUX JACK in the console.

(b) The 3.5 jack can only be used if it is a single AUX jack.

12-pin pre-wired ASWC-1 harness:

ThisharnessistobeusedinalongwiththeoptionalASWC-1(notincluded)to

retainsteeringwheelaudiocontrols.IftheASWC-1isnotbeingused,disregard

thisharness.Ifitwillbeused,pleaserefertotheASWC-1instructionsforradio

connectionsandprogramming.

Note: Disregard the harness that comes with the ASWC-1.

• ConnecttheRedwiretotheaccessorywire.

Connections to be made

GMOS-MOST-01

Connections to be made

• ConnecttheGreen/Black wiretotheGreen/Blackwireintheblack,8-pin

connectorbelowthesteeringcolumn,onthebottomside.(FigureA)

DIN jack:

TheDINjackistobeusedwiththeoptionalAX-LCD(soldseparately).

• ConnecttheRedwiretotheaccessorywire.

Note: The relay attached to the GMOS-MOST-01 harness is only for audible

turn signal clicks. No extra steps are required to retain this feature, so leave the

relay as-is.

With the key in the off position:

• Connectthe16-pin,8-pinand14-pinharnessintotheinterface.

• Withthekeyintheoffposition,connecttheGMOS-MOST-01harnessintothevehicle.

• Withallconnectionscompleted,reconnectthenegativebatteryterminal.

Note:If using the ASWC-1, connect it after you initialize and test the GMOS-

MOST-01, with the key in the off position.

Initializing the GMOS-MOST-01

Attention:If the GMOS-MOST-01 loses power for any reason, the following step

will need to be performed again.

• Initializetheinterfacebyturningtheignitiononfor30seconds,thenturnthe

ignitionbackoff,thenbackonagain.

Adjusting the GMOS-MOST-01

• Withthevehicleandradioturnedon,turnthevolumeup3/4oftheway.

• LocatetheendoftheGMOS-MOST-01withthe16-pinharnesswithstrippedleads.

• Withasmallscrewdriver,adjustthepotentiometerclockwisetoraisetheaudio

level;counterclockwisetolowertheaudiolevel.

• Onceatadesiredlevel,theaudioleveladjustmentiscomplete.

Installing the GMOS-MOST-01

(Figure A)

Green/Black wire

Axxess GMOS-MOST-01 Installation guide

Axxess GMOS-MOST-01 Installation guide

Axxess GMOS-MOST-01 Installation guide

Related papers

Other documents