Dual MGH37BT User Manual

MGH37BT

Front and Rear Inputs

INSTALLATION/OWNER'S MANUAL

AM/FM Gauge Hole Receiver

MGH37BT OPERATION

Mounting

Please read entire manual before installation.

Before You Start

• Disconnect negative battery terminal. Consult a qualified technician for instructions.

• Avoid installing the unit where it would be subject to high temperatures, such as from
direct sunlight, or where it would be subject to dust, dirt or excessive vibration.

Getting Started

• Once a suitable location has been determined, drill the hole and secure the stereo
using the metal mounting bracket. If the bracket needs to be shortened, remove the
appropriate number of breakaway segments using a pair of pliers.

Color Connection

Red 12V Ignition / Accessory

Black Ground

Blue Remote Turn-on B (+)

Grey Right Front (+)

Grey/Black Right Front (-)

White Left Front (+)

White/Black Left Front (-)

Violet Right Rear (+)

Violet/Black Right Rear (-)

Green Left Rear (+)

Green/Black Left Rear (-)

Yellow Camera Input (RCA)

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Break Lines

Tip:

When a suitable ground wire is

not present in the vehicle wiring

harness, connect the black ground

wire to the vehicle chassis.

Fuse:

When replacing the fuse, make sure

new fuse is the correct type and

amperage. Using an incorrect fuse

could damage the radio.

MGH37BT OPERATION

Installation

Installation

C

A

3 Inch Hole

Mounting the Radio

1. Choose a mounting location on the dash board or instrument panel that will
allow room behind to run radio cables to the power source. Consider how you will use
the AUX IN, LINE OUT and USB connectors and route the appropriate extension cables
to an accessible area.

2. Cut a hole in the dash board using the template provided in the back of this manual. At
least 3 3/4” depth is needed to mount the radio.

IMPORTANT! Do not mount this unit where it can be submerged in water.

D

B

E

3. Slide the included spring washers (B) over the screw posts (A) and attach the screw
posts to the back of the radio.

4. Place the radio in front of the dashboard opening so the wiring can be brought through
the opening.

5. After completing the wiring connections, turn the radio on to confirm operation (vehicle
accessory switch must be on). If the radio does not operate, recheck all wiring until the
problem is corrected. Once proper operation is achieved, turn the accessory switch off
and proceed with final mounting of the radio. Refer to the “Wiring Diagram” on page 5.

NOTE: Before final installation, test the wiring connections to make sure the unit is con­nected properly and the system works.

6. Insert the radio into the mounting hole.

7. Place the “U” bracket (C) over the screw posts and secure the radio to the dash using
the included hex nuts (D). If necessary, cut the score marks (E) on either side of the
mounting bracket to custom fit the bracket length for your application. See Figure A.

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MGH37BT OPERATION

Wiring

USBØ5(BLACK)

ANTØ3(BLACK)

2P RCA CABLE(GRAY)

FUSE

2P RCA CABLE(YELLOW)

WHITE MOLDING

RED MOLDNNG

WHITE MOLDING

RED MOLDNNG

USB
ANT

REAR LINE OUT

AUX

PHONE JACK(Ø3.5)
STEERING WHEEL

4

MGH37BT OPERATION

Control Locations

4

3

2

1

11

10

9

1

17

16

15

14

13

12

2

3

4

5

6

7

8

9

10

11

5

8

Mode

1

Volume Up

2

Power

3

Select

4

Tune / Track Up

5

Volume Down

6

Audio / Menu

7

Preset 3 / Intro

8

Preset 2 / Random

9

Power

1

6

7

Mute

2

Band / Go Back

3

Tune Down

4

Tune Up

5

Play / Pause / Presets

6

Select / Thumbs Up

7

Volume Up

8

Volume Down

9

Mode / Clock

10

Audio / Menu

11

Preset 6 / Folder Up

10

Display

11

Mute

12

Preset 5 / Folder Down

13

Preset 4 / Play / Pause

14

Preset 1 / Repeat

15

Band / Go Back

16

Tune / Track Down

17

5

MGH37BT OPERATION

iPlug™ Operation

iPlug™ Operation

iPlug™ Features

Connecting and Using the 

iPlug™ App

The iPlug™ Smart App is the ultimate wireless remote
control for your MGH37BT receiver. You can store your IR
remote control and enjoy the convenience of all the primary
functions of your MGH37BT receiver right from your phone
or tablet by transforming your mobile device into a functional
stereo remote control.

Note: The app is available both Apple and Android devices
and can be downloaded from iTunes and Google Play Store.

This app controls all of the primary functions of your stereo
features including:

• Power on/off

• Volume and mute

• CD/DVD player

• AM/FM radio tuner: access station, recall, change radio
stations and store presets

• Bluetooth® streaming audio

• File structure visibility, track selection, track audible scan
up and down via USB

• iPod/iPhone/iPad® control capabilities via USB

• Auxiliary audio input control

• Audio menu controls-bass, treble, balance, fader,
equalizer and volume settings

After downloading and installing the iPlug app, pair your
device to the MGH37BT as stated for Bluetooth paring. When
the iPlug app is installed on an Android device, close the app
before Bluetooth pairing; otherwise there may be errors with
the Bluetooth connection.

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MGH37BT OPERATION

General Operation

Power On/Off

Mode

Press to turn unit on. Press and hold to turn unit off.

Press MODE to select between Tuner, Aux, USB, iPod and
Bluetooth modes. Modes of operation are shown in the display.

Auxiliary Input

The MGH37BT offers rear RCA auxiliary input ports for connecting
external devices. Press MODE to select auxiliary input mode.

Volume

Display

Reset

Adjust volume using the volume up/down keys.

Press DISP to toggle between various displayed information.

If abnormal operation occurs, press MENU and TUNE
three seconds to reset the unit to the default factory settings.

Setup Menu

Press MENU to toggle through and select one of the following
setup menus: Audio, General, Gain and Screen.

1. Once the desired menu is displayed, use the volume up/down
buttons to scroll through the list of menu features.

2. Press SELECT to select a specific feature to adjust, then
use the volume up/down buttons to adjust or activate
the desired feature.

3. Press SELECT to confirm and save the changes.

Menu Function Options

Equalization 
Curves

Loudness

Bass Level

Bass Frequency

Middle Level

Middle Frequency

Treble Level

Treble Frequency

Balance

Fader

Use the Volume up/down buttons to cycle through the following equalization
curves: Flat, Pop, Jazz, Classic, Beat, Rock and User. Any manual adjustment to
the Bass or Treble settings are automatically saved as User.

Use the Volume up/down buttons to activate or deactivate the Loudness feature,
which increases bass and treble levels at low volume.

Use the Volume up/down buttons to adjust the bass level setting
(-6 minimum / +6 maximum).

Use the Volume up/down buttons to select one of the following bass frequency
settings: 60 Hz, 80 Hz, 100 Hz or 200 Hz.

Use the Volume up/down buttons to adjust the middle level setting
(-6 minimum / +6 maximum).

Use the Volume up/down buttons to select one of the following middle
frequency settings: 500 Hz, 1 kHz, 1.5 kHz or 2.5 kHz.

Use the Volume up/down buttons to adjust the treble level setting
(-6 minimum / +6 maximum).

Use the Volume up/down buttons to select one of the following treble frequency
settings: 10 KHz, 12.5 KHz, 15 KHz or 17.5 KHz.

Use the Volume up/down buttons to adjust the balance setting.
(12-L to 12-R; 0 represents equal balance).

Use the Volume up/down buttons to adjust the fader setting.
(12-F to 12-R; 0 represents equal balance)

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