Metra Electronics 99-7388HG User manual

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INSTALLATION INSTRUCTIONS
99-7388HG
Attention! Let the vehicle sit with the key
out of the ignition for a few minutes before
removing the factory radio. When testing the
aftermarket equipment, ensure that all factory
equipment is connected before cycling the
key to ignition.
Kia Soul (with NAV) 2014 up*
*Visit MetraOnline.com for more detailed information about the product and up-to-date vehicle
specific applications
KIT COMPONENTS
• A) Radio/climate trim panel with climate display • B) Radio brackets • C) Pocket • D) Heated seat blank plugs • E) (4) #8 x 3/8” Phillips screws
• F) (6) Panel clips • G) Axxess interface and wiring harness (not shown)
TOOLS REQUIRED
• Panel removal tool • Phillips screwdriver
TABLE OF CONTENTS
Dash Disassembly...................................................2
Kit Preparation .......................................................2
Kit Assembly
–ISO DIN radio provision with pocket...................3
–ISO DDIN radio provision......................................3
Axxess Interface Installation .............................4-11
WIRING & ANTENNA CONNECTIONS (sold separately)
Wiring harness: Included with kit
Antenna adapter: Included with kit
Steering wheel control interface: Included with kit
12v to 6v camera step-down: AX-CAM6V Included with kit
A B C D E
F
KIT FEATURES
• ISO DIN radio provision with pocket
• ISO DDIN radio provision
• Includes climate display for fan speed, mode, and temp, which was
displayed on the factory radio
• Includes an Axxess interface and wiring harness
• Includes an AX-CAM6V and antenna adapter for a complete installation
• Painted high gloss black

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2
DASH DISASSEMBLY KIT PREPARATION
1. Unclip the climate panel surrounding the
radio and set to the side. (Figure A)
2. Remove (4) Phillips screws securing the
radio. Slide the radio out, then unplug
and remove the radio. (Figure B)
Continue to Kit Preparation
(Figure B)
(Figure A)
From the factory climate panel:
1. Remove (4) Phillips screws securing
the climate controls and passenger
airbag switch panel, then remove the
components. (Figure A)
To the 99-7388HG radio/climate trim panel
with climate display:
2. If the vehicle is not equipped with
heated seats, snap in the heated seat
blank plugs. (Figure B)
3. Secure the climate controls and
passenger airbag switch panel using the
factory screws. (Figure C)
Continue to Kit Assembly
(Figure A)
(Figure B)
(Figure C)

REV. 11/19/2018 INST99-7388HG 3
KIT ASSEMBLY
ISO DIN radio provision with pocket
1. Secure the radio brackets to the pocket
using the (4) #8 x 3/8” Phillips screws
provided. (Figure A)
2. Remove the metal DIN sleeve and trim
ring from the aftermarket radio.
3. Slide the radio into the bracket/pocket
assembly, then secure it to the assembly
using the screws supplied with the
radio. (Figure B)
Continue to Axxess Interface
Installation
(Figure B)
(Figure A)(Figure A)
ISO DDIN radio provision
1. Secure the radio brackets to the radio
using the screws supplied with the
radio. (Figure A)
Continue to Axxess Interface
Installation

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4
INTERFACE FEATURES
INTERFACE COMPONENTS
• Axxess interface
• AX-HYKIA-SPDIF interface
• AX-CAM6V
• 7388 wiring harness (a) (labeled LD-SOULAMP)
• 7388 wiring harness (b) (labeled LD-SOULAMP2)
• 16-pin harness with stripped leads
• Female 3.5mm connector with stripped leads
TOOLS REQUIRED
• Crimping tool and connectors, or solder gun, solder, and heat shrink
• Tape • Wire cutter • Zip ties • Small flat-blade screwdriver
TABLE OF CONTENTS
Connections............................................................................................................ ....................5-6
Installing the Axxess Interface and AX-HYKIA-SPDIF ................................................................6
Programming the Axxess Interface and Climate Display ...........................................................7
Final Assembly .............................................................................................................................. 7
Audio Level Adjustment ............................................................................................................... 7
Steering Wheel Control Settings ............................................................................................8-11
- L.E.D. feedback
- Changing radio type
- Remapping the steering wheel control buttons
- Dual assignment instructions (long button press)
Troubleshooting ............................................................................................................................11
• Provides NAV outputs (parking brake, reverse, speed sense)
• Retains audio controls on the steering wheel
• Retains the factory backup camera
• Includes an AX-CAM6V 12-to-6V step-down for the factory camera
• Retains the factory AUX-IN jack
• Retains balance
• Micro-B USB updatable
AXXESS INTERFACE INSTALLATION

REV. 11/19/2018 INST99-7388HG 5
CONNECTIONS
From the 16-pin harness with stripped leads to the aftermarket radio:
• Connect the Red wire to the accessory 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 Gray wire to the right front positive speaker output.
• Connect the Gray/Black wire to the right front negative speaker output.
• Connect the White wire to the left front positive speaker output.
• Connect the White/Black wire to the left front negative speaker output.
• Tape off and disregard the following (9) wires, they will not be used in this application:
Blue/Pink, Brown, Green, Green/Black, Green/Purple, Light Green, Orange/White,
Purple, Purple/Black
From the 7388 harness to the aftermarket radio:
There are (2) 7388 harnesses. Harness (a) is for 2018-up models, and harness (b) is for
2017 models.
• Connect the Black wire to the ground wire, and also to the Black wire from the AX-CAM6V.
Note: For harness (a) only, connect the Black wire labeled “CAMERA GROUND” as well.
• Connect the Yellow wire to the battery wire.
• Connect the Red wire labeled “6-volt camera power” to the Blue/Red wire from the
AX-CAM6V.
• Connect the Blue wire to the power antenna wire.
• If the aftermarket radio has an illumination wire, connect the Orange wire to it.
The following (3) wires are only for multimedia/navigation radios that require these wires.
• Connect the Blue/Pink wire to the speed sense wire.
• Connect the Green/Purple wire to the reverse wire, and also to the Blue/White wire from
the AX-CAM6V.
• Connect the Light Green wire to the parking brake wire.
• If retaining the factory AUX-IN jack, connect the Red and White RCA jacks to the audio
AUX-IN jacks.
• Connect the Yellow RCA jack to the backup camera input.

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CONNECTIONS (CONT.)
3.5mm jack steering wheel control retention:
The 3.5mm jack is to be used to retain audio controls on the steering wheel.
• For the radios listed below: Connect the
female 3.5mm connector with stripped leads, to the
male 3.5mm SWC jack from the 7388 harness. Any remaining wires tape off and disregard:
•
Eclipse: Connect the steering wheel control wire, normally Brown, to the Brown/White
wire from the connector. Then connect the remaining steering wheel control wire, normally
Brown/White, to the Brown wire from the connector
.
•
Metra OE: Connect the steering wheel control Key 1 wire (Gray) to the Brown wire.
•
Kenwood or select JVC with a steering wheel control wire: Connect the Blue/Yellow wire to
the
Brown wire.
Note: If the Kenwood radio auto detects as a JVC, manually set the radio type to Kenwood.
See the instructions under Changing Radio Type.
• XITE: Connect the steering wheel control SWC-2 wire from the radio to the Brown wire.
•
Parrot Asteroid Smart or Tablet: Connect the 3.5mm jack into the AX-SWC-PARROT (sold
separately), and then connect the 4-pin connector from the AX-SWC-PARROT into the radio.
Note: The radio must have rev. 2.1.4 or higher software.
• Universal “2 or 3 wire” radio: Connect the steering wheel control wire, referred to as Key-A
or SWC-1, to the
Brown wire from the connector. Then connect the remaining steering wheel
control wire, referred to as Key-B or SWC-2, to the
Brown/White wire from the connector. If
the radio comes with a third wire for ground, disregard this wire
. Note: After the interface
has been programmed to the vehicle, refer to the manual provided with the radio for
assigning the SWC buttons. Contact the radio manufacturer for more information
.
• For all other radios: Connect the 3.5mm jack from the 7388 harness into the jack from the
aftermarket radio designated for an external steering wheel control interface. Please refer to the
aftermarket radios manual if in doubt as to where the 3.5mm jack should connect to.
With the key in the off position:
1. Connect the 16-pin harness with stripped leads , and the 7388 harness , into the
Axxess interface.
2. Connect the 7388 harness to the AX-HYKIA-SPDIF interface.
3. Connect the 7388 harness to the climate display .
4. Locate the factory antenna connector in the dash and complete all necessary connections to
the radio. Use the antenna adapter provided to adapt the factory antenna connector to the
aftermarket radio.
Attention! If retaining steering wheel controls, ensure that the SWC jack/wire is connected to the
radio before proceeding. If this step is skipped, the interface will need to be reset for the steering
wheel controls to function.
INSTALLING THE AXXESS INTERFACE
AND AX-HYKIA-SPDIF

REV. 11/19/2018 INST99-7388HG 7
PROGRAMMING THE AXXESS INTERFACE AND CLIMATE DISPLAY
Programming the Axxess interface:
1. For the steps below, the L.E.D. located inside the interface can only be seen while active.
The interface does not need to be opened to see the L.E.D.
2. Start the vehicle. The L.E.D. will initially turn on solid Green, then turn off for a few seconds
while it auto detects the radio installed.
3. The L.E.D. will then flash Red up to (18) times indicating which radio is connected to the
interface, and then turn off for a couple of seconds. Pay close attention to how many Red
flashes there are. This will help in troubleshooting, if need be. Refer to the L.E.D. feedback
section for more information.
4. After a couple seconds the L.E.D. will turn on solid Red while the interface auto detects the
vehicle. The radio will shut off at this point. This process should take 5 to 30 seconds.
5. Once the vehicle has been auto detected by the interface, the L.E.D. will turn on solid Green,
and the radio will come back on, indicating programming was successful.
Programming the climate display:
1. Turn the parking lights on.
2. Turn the vehicles light dimmer all the way down, then all the way up.
3. Turn the lights off.
4. Test all functions of the installation for proper operation before reassembling the dash. Refer
to the Steering Wheel Control Settings section for customizing the buttons, if so desired.
Refer also to the Audio Level Adjustment section for adjusting the amplifier gain, if need be.
1. Secure the radio assembly to the dash using the factory screws.
2. Reassemble the dash in reverse order of disassembly to complete the installation.
1. With the vehicle and radio turned on, turn the volume up 3/4 of the way.
2. With a small flat-blade screwdriver, adjust the potentiometer clockwise to raise the audio
level; counterclockwise to lower the audio level.
3. Once at a desired level, audio level adjustment is complete.
FINAL ASSEMBLY
AUDIO LEVEL ADJUSTMENT

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STEERING WHEEL CONTROL SETTINGS
L.E.D. feedback
The (18) Red L.E.D. flashes represent what brand radio the Axxess interface believes it is
connected to. Each flash represents a different radio Manufacturer. For example, if you are
installing a JVC radio, the Axxess interface will flash Red (5) times, and then stop. Following is a
legend that dictates which radio Manufacturer corresponds to which flash.
L.E.D. feedback legend
1 flash - Eclipse (Type 1) †
2 flashes - Kenwood ‡
3 flashes - Clarion (Type 1) †
4 flashes - Sony/Dual
5 flashes - JVC
6 flashes - Pioneer/Jensen
7 flashes - Alpine *
8 flashes - Visteon
9 flashes - Valor
10 flashes - Clarion (Type 2) †
11 flashes - Metra OE
12 flashes - Eclipse (Type 2) †
13 flashes - LG
14 flashes - Parrot **
15 flashes - XITE
16 flashes - Philips
17 flashes - TBA
18 flashes – JBL
* Note: If the Axxess interface flashes Red (7) times, and you do not have an Alpine radio
connected to it, that means the Axxess interface does not detect a radio connected to it. Verify
that the 3.5mm jack is connected to the correct steering wheel jack/wire in the radio.
** Note: The AX-SWC-PARROT is required (sold separately). Also, the Parrot radio must have rev.
2.1.4 or higher software.
† Note: If you have a Clarion radio and the steering wheel controls do not work, change the
radio type to the other Clarion radio type; same for Eclipse. The following section explains
how to do this.
‡ Note: If you have a Kenwood radio and the L.E.D. feedback comes back showing as a JVC radio,
change the radio type to Kenwood. The following section explains how to do this.
Attention: The Axxess Updater App can also be used to program the following (3) sub-sections
as well, pending that the Axxess interface has been programmed.
Continued on the next page

REV. 11/19/2018 INST99-7388HG 9
STEERING WHEEL CONTROL SETTINGS (CONT.)
Changing radio type
If the L.E.D. flashes do not match the radio you have connected, you must manually program the
Axxess interface to tell it what radio it is connected to.
1. After (3) seconds of turning the key on, press and hold the Volume Down button on the
steering wheel until the L.E.D. in the Axxess interface goes solid.
2. Release the Volume Down button; the L.E.D. will go out indicating the Axxess interface is in
Changing Radio Type mode.
3. Refer to the Radio Legend to know which radio number you would like to have programmed.
4. Press and hold the Volume Up button until the L.E.D. goes solid, and then release. Repeat
this step for the desired radio number you have selected.
5. Once the desired radio number has been selected, press and hold the Volume Down
button on the steering wheel until the L.E.D. goes solid. The L.E.D. will remain on for about
(3) seconds while it stores the new radio information.
6. Once the L.E.D. goes out, the Changing Radio Type mode will then end. You can now test
the steering control wheel controls.
Note: If at any time the user fails to press any button for a period longer than (10) seconds, this
process will abort.
Continued on the next page
Radio legend
1 flash - Eclipse (Type 1) †
2 flashes - Kenwood ‡
3 flashes - Clarion (Type 1) †
4 flashes - Sony/Dual
5 flashes - JVC
6 flashes - Pioneer/Jensen
7 flashes - Alpine *
8 flashes - Visteon
9 flashes - Valor
10 flashes - Clarion (Type 2) †
11 flashes - Metra OE
12 flashes - Eclipse (Type 2) †
13 flashes - LG
14 flashes - Parrot **
15 flashes - XITE
16 flashes - Philips
17 flashes - TBA
18 flashes – JBL

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10
STEERING WHEEL CONTROL SETTINGS (CONT.)
Remapping the steering wheel control buttons
Once the Axxess interface has been programmed, the button assignment for the steering wheel
controls may be reassigned if so desired. For example, if the Seek Up button is preferred to be
the Mute button instead. Follow the steps below to remap the steering wheel control buttons.
1. Ensure the Axxess interface is visible so you can see the L.E.D. flashes to confirm
button recognition.
Tip: Turning the radio off is recommended.
2. Within the first twenty seconds of turning the ignition on, press and hold the Volume Up
button on the steering wheel until the L.E.D. goes solid.
3. Release the Volume Up button, the L.E.D. will then go out; The Volume Up button has now
been programmed.
4. Follow the list in the Button Function Legend to reference the order in which the steering
wheel control buttons need to be programmed.
Note: If the next function on the list is not on the steering wheel, press the Volume Up
button for (1) second until the L.E.D. comes on to skip that function, and then release the
Volume Up button. This will tell the Axxess interface that this function is not available, and it
will move on to the next function.
5. To complete the remapping process, press and hold the Volume Up button until the L.E.D. in
the Axxess interface goes out.
Button Function Legend
1. Volume-Up
2. Volume-Down
3. Seek-Up/Next
4. Seek-Down/Prev
5. Source/Mode
6. Mute
7. Preset-Up
8. Preset-Down
9. Power
10. Band
11. Play/Enter
12. PTT (Push to Talk)
13. On-Hook
14. Off-Hook
15. Fan-Up *
16. Fan-Down *
17. Temp-Up *
18. Temp-Down *
* Not applicable in this application
Note: Some radios may not have these commands. Please refer to the manual provided
with the radio, or contact the radio manufacturer for specific commands recognized by
that particular radio.
Continued on the next page