Dual MGH37BT Operating instructions

MGH37BT
INSTALLATION/OWNER'S MANUAL
AM/FM Gauge Hole Receiver
Front and Rear Inputs

2
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.
Fuse:
When replacing the fuse, make sure
new fuse is the correct type and
amperage. Using an incorrect fuse
could damage the radio.
Tip:
When a suitable ground wire is
not present in the vehicle wiring
harness, connect the black ground
wire to the vehicle chassis.
Break Lines
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)

3
MGH37BT OPERATION
Installation
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.
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 con-
nected 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.
Installation
A
C
D
E
B
3 Inch Hole

4
MGH37BT OPERATION
Wiring
FUSE
ANT
USB
AUX
REAR LINE OUT
STEERING WHEEL
PHONE JACK(Ø3.5)
2P RCA CABLE(YELLOW)
2P RCA CABLE(GRAY)
ANTØ3(BLACK)
USBØ5(BLACK)
RED MOLDNNG
WHITE MOLDING
RED MOLDNNG
WHITE MOLDING

5
MGH37BT OPERATION
Control Locations
12
4
3
5
6
7
8
9
10
11
Preset 6 / Folder Up
Display
Mute
Preset 5 / Folder Down
Preset 4 / Play / Pause
Preset 1 / Repeat
Band / Go Back
Tune / Track Down
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Mode
Volume Up
Power
Select
Tune / Track Up
Volume Down
Audio / Menu
Preset 3 / Intro
Preset 2 / Random
4
6
15
13
14
16
17
12
1
2
3
5
7
8
9
10
11
Select / Thumbs Up
Volume Up
Volume Down
Mode / Clock
Audio / Menu
1
2
3
4
5
6
7
8
9
10
11
Power
Mute
Band / Go Back
Tune Down
Tune Up
Play / Pause / Presets

6
MGH37BT OPERATION
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.
iPlug™ Operation
iPlug™ Features
Connecting and Using the
iPlug™ App
iPlug™ Operation

7
MGH37BT OPERATION
General Operation
Menu Function Options
Equalization
Curves
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.
Loudness Use the Volume up/down buttons to activate or deactivate the Loudness feature,
which increases bass and treble levels at low volume.
Bass Level Use the Volume up/down buttons to adjust the bass level setting
(-6 minimum / +6 maximum).
Bass Frequency Use the Volume up/down buttons to select one of the following bass frequency
settings: 60 Hz, 80 Hz, 100 Hz or 200 Hz.
Middle Level Use the Volume up/down buttons to adjust the middle level setting
(-6 minimum / +6 maximum).
Middle Frequency 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.
Treble Level Use the Volume up/down buttons to adjust the treble level setting
(-6 minimum / +6 maximum).
Treble Frequency 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.
Balance Use the Volume up/down buttons to adjust the balance setting.
(12-L to 12-R; 0 represents equal balance).
Fader Use the Volume up/down buttons to adjust the fader setting.
(12-F to 12-R; 0 represents equal balance)
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.
The MGH37BT offers rear RCA auxiliary input ports for connecting
external devices. Press MODE to select auxiliary input mode.
Adjust volume using the volume up/down keys.
Press DISP to toggle between various displayed information.
If abnormal operation occurs, press MENU and TUNE
nn
for
three seconds to reset the unit to the default factory settings.
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.
Power On/Off
Mode
Auxiliary Input
Volume
Display
Reset
Setup Menu

8
MGH37BT OPERATION
General Operation
Menu Function Options Action
Tuner
Frequency
Spacing
USA Programs the unit to USA tuner spacing.
(200kHz for FM and 10kHz for AM).
S-America Programs the unit to South American tuner spacing.
(100kHz for FM and 10kHz for AM).
Europe Programs the unit to European tuner spacing.
(50kHz for FM and 9kHz for AM).
Auto Station
Store AUTO STORE Press SELECT to seek and save 6 strong stations in the
current band.
Local/Distance
Tuning
Off Activates distance tuning.
On Activates local tuning for strong station reception only.
Scrolling
Option
Off Programs the unit to not scroll any information on the
display.
Once Programs the unit to only scroll information once.
15Sec Programs unit to scroll information once every 15 seconds
(default).
On Programs unit to scroll information continuously.
iPod Control
Full Programs the head unit to advanced control of the iPod/
iPhone device.
Manual
Programs the head unit to manual control of the iPod/iPhone
device and allows music to be controlled from the iPod/
iPhone device.
Beep
Confirmation
Off Disables the confirmation beep.
On Enables the confirmation beep.
Programmable
Turn On Volume Variable
Value
Programs unit to always turn on at a specific volume
(default is Off). A volume level of 1-30 can be selected.
General Setup Menu

9
MGH37BT OPERATION
General Operation
Gain Setup Menu
Menu Function Options
Tuner Gain Use the Volume up/down buttons to adjust the tuner gain.
(-6 minimum / +6 maximum)
Aux Gain Use the Volume up/down buttons to adjust the gain for the front auxiliary input.
(-6 minimum / +6 maximum)
Bluetooth Gain Use the Volume up/down buttons to adjust the gain for the Bluetooth A2DP
Playback.
(-6 minimum / +6 maximum)
USB Gain Use the Volume up/down buttons to adjust the gain for USB playback.
(-6 minimum / +6 maximum)
iPod Gain Use the Volume up/down buttons to adjust the gain for iPod playback.
(-6 minimum / +6 maximum)
Screen Setup Menu
Menu Function Options
Contrast Use the Volume up/down buttons to adjust the contrast settings of the display
screen from 0 to 50.
Brightness Use the Volume up/down buttons to adjust the brightness settings of the display
screen from 0 to 50.
Demo Use the Volume up/down buttons to to enable (ON) or disable (OFF) the
demonstration mode.

10
MGH37BT OPERATION
Manual Tuning
Seek Tuning
Band
Storing Preset Stations
Automatically Store
Preset Stations
Recalling
Preset Stations
Press TUNE
nn
or TUNE
ll
momentarily to change
radio frequency up or down one step at a time. Press and
hold to advance quickly.
Press TUNE
nn
or TUNE
ll
for more than one second
(then release) to automatically seek and tune to the next
strong station.
Press BAND to select between FM1, FM2, FM3, AM1 and
AM2 bands. Up to six preset stations can be programmed
for each band, enabling up to 18 FM stations and 12 AM
stations to be stored in memory.
To manually store a station, select the desired band and
station. Press and hold Pfor more than two seconds, then
press the volume up/down buttons to step through preset
numbers one through six. When the desired preset number
is reached, press SELECT to save the selection.
Press MENU twice, then press Volume Up to select Auto
Station Store. Press SELECT to confirm. The unit will
automatically scan and store the six strongest stations in
the current band as presets.
Once stations have been saved, press Pto step through
each preset station in the current band.
AM/FM Tuner Operation