AUX
3.1
User Manual
Chapter 1 – Getting Started
1.1 Subject
The GROM AUX adapter – an integration between an MP3 player and a factory installed car
stereo. Equipped with the specific vehicle harness and standard RCA jack the GROM AUX
interface will allow you to connect your MP3 player or iPod / iPhone to the car stereo system
easily.
1.2 Introduction
Thank you for purchasing the GROM AUX adapter, which has been designed to provide endless
hours of listening pleasure through most vehicles factory radios. To insure that your AUX
interface performs correctly in your car or truck, we recommend that you read this entire manual
before attempting install the GROM interface.
1.3 Precautions
Proper mounting location
Securely install the interface in a location that is free from heat, humidity, moving parts, or direct
sunlight. Beware of hot airflow from your vehicle’s climate control system. We recommend
securing the interface to a suitable location, free of sharp metal edges, using double-sided tape,
Velcro, or wire ties.
1.4 Disclaimer
• This product is not affiliated with any of the OEM manufactures
• Modifying the radio may void any outstanding warranty.
• The purchase of this product carries with it no warranties, either expressed or implied.
• While every care has been taken to provide a quality product, we cannot guarantee that
the GROM AUX adapter to function correctly if installation is not done according to the
instructions in this guide. We also cannot guarantee that the GROM AUX adapter will
function correctly with an MP3 player if the MP3 player is broken or damaged or not
supported
• Keep your eyes on the road while driving!
• We are not liable for the misuse of this product. Misuse includes improper installation,
damage to the board or radio while trying to install it, and the illegal use of the radio.
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1.5 Completeness and connection of set
a) GROM Audio AUX adapter set consists of GROM AUX interface, RCA cable, 3.5 mm phone
jack, and vehicle specific cable (see figure 1).
GROM AUX interface (1) RCA cable (2) 3.5 mm phone jack (3) Vehicle specific cable (4)
Figure 1. Package content.
b) Basic wiring diagram of GROM Audio AUX adapter is the following ( see Figure 2):
Figure 2. Basic wiring diagram
1.6 Important Compatibility Notes
If your vehicle is equipped with an external factory CD changer, you must disconnect it in order
to be able to install the interface. You will lose the use of the external CD changer to gain the
use of your iPod or MP3 player. Any built-in CD changer will remain working.
For a full version of the GROM application guide, please visit
http://gromaudio.com/grom_application_guide.pdf or contact Grom Audio at
http://gromaudio.com/support.html
Chapter 2 – General Installation
2.1 Installation location:
Most installations will require you to remove the factory radio in order to plug in the vehicle
specific harness.
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For some vehicles, you will also have the option to connect the interface to the factory pre-run
CD changer cable located in the trunk or glove box.
2.2 Tools needed:
In many cases, there are no any special tools required in order to remove the stereo out. For
some stereos, it is better to use car stereo removal tools. Please consult your local car audio
shop or your vehicle’s dealership for instructions or assistance if necessary.
If you are unsure how to install the interface properly, we recommend contacting your local car
stereo shop for the assistance.
2.3 Preparation and adapter installation
1. Turn off car engine and remove key from ignition
2. If your radio uses a Security Code, make sure that you have the code before unplugging
the radio.
3. Un-mount your radio from the dash in order to get access to the back side of the radio.
Some vehicles require the special tools to remove the radio. Please consult your vehicle’s
dealership or a local car audio professional if necessary.
4.
Attach the car harness connector to the back of the stereo to the CD changer port. Be
sure to make a firm connection but do not force it. Connect the other end to the interface.
5.
In some Toyota/Lexus/Scion and Honda/Acura vehicles, the CD changer port is occupied
with a factory harness (such as NAV or audio harness). The GROM package for
Toyota/Lexus/Scion and Honda/Acura includes a Y shaped vehicle cable. In order to
connect interface properly please follow to the scheme below.
Figure 3. Connection scheme
If the car has no NAV or XM leave the female end of the vehicle specific harness open.
6. Once the interface is connected to the radio, you will need to test the operation of the
interface before re-assembling the dash.
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7. Turn your car stereo on and switch it over to the CD Changer mode using the Disk / Mode
/ CD / AUX (depending on the stereo type) buttons on your car stereo until it shows Disk
1, Track 01 on a display.
8. Connect the RCA cable to the MP3 player or the iPod. Turn on the MP3 player or the
iPod and play some tunes. You should now hear the sound coming from the car stereo
speakers.
9. Once the operation of the interface is confirmed, you may continue with the installation. If
you experience difficulties with the installation, please see our troubleshooting section.
10. Find a place where you can place the GROM AUX adapter. In many cars, there is enough
room in the dash to place GROM.
Note: Make sure you mount the GROM AUX adapter in the place with enough room so
that, when you re-mount the car stereo, you do not break the adapter.
11. You may use the glove box or other spaces inside the dash to direct Audio cables out.
12. Re-mount your car stereo, making sure its clips or strews are secure.
Congratulations! You have installed the GROM AUX adapter. You may now use it with your
MP3 player or iPod / iPhone.
2.5 When the car ignition is OFF
GROM-AUX adapter does not control the MP3 player or the iPod. When you turn your car
ignition or car stereo off, the MP3 player or the iPod will remain playing. You will need to turn the
iPod or the MP3 player off manually if you do not want it to continue playing.
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Chapter 3. Support
For questions or technical support please visit http://gromaudio.com/support.html Your
question will be answered within next 1 business day.
Troubleshooting
Symptom Cause Remedy
No power Bad connection Check the cable connections.
Radio is not
recognizing GROM
AUX adapter
Some Honda, Toyota, Lexus car
stereo have to be restarted before
the radio catches the signal
After connecting the adapter turn the
stereo on, and then turn the ignition
off and back on
Radio is not
recognizing GROM
AUX adapter
External CD changer is present Make sure to disconnect the external
CD changer
Radio is not
recognizing GROM
AUX adapter
Bad cables or cables are not
connected properly between the
interface box and car radio.
Check connection and cables, push
in firmly.
You can’t hear the
music from MP3
player
No CD changer is selected Make sure CD changer, SAT mode
or AUX is selected ( correct key
depends on your stereo)
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