Discount Car Stereo A2D-C5FM User manual

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A2D-C5FM
MUSIC STREAMING MODULE INSTALLATION GUIDE FOR 1997-04 CORVETTE
Created January 16, 2022
Revised July 12, 2022

PRODUCT SAFETY & DISCLAIMER
READ ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING, FAILURE TO DO SO MAY CAUSE
PERSONAL INJURY OR DAMAGE TO PRODUCT AND/OR PROPERTY
This installation guide is provided as a GENERAL installation guide, some vehicles vary and
may require additional steps. We do not accept responsibility for third party labor charges
or modifications. Exercise due-diligence when installing this product.
We do not accept any responsibility for vehicle damage or personal injury resulting from
the installation of this product.
Careless installation and operation can result in equipment damage
Requirement
1997--04 Corvette factory radio
Introduction
With Bluetooth technology and a Smartphone; C5 Corvette radios without
dedicated AUX port are able to stream applications on the car speakers thanks
to the A2D-C5FM. The A2D-C5FM kit is designed to install in line with the radio FM
antenna using the included antenna adapter kit. The A2D-C5FM works through
the FM band and does not interfere with normal radio operation nor other
factory options. This is an FM modulation kit which differs from FM transmitters
as the later tends to produce additional interference. Installation is a simple
plug-n-play affair and is hidden behind the dash. Although this may not be the
“perfect”audio solution, it’s the best solution we currently offer for C5 owners
without CD changers.
Installation- To radio
This module is installed behind radio cavity.
The PXHGM4 installation harness (included) allows the A2D-
C5FM to connect behind the dash. Radio removal required for
this install. This kit does not connect in trunk/hatch.
Radio removal required. ( Click links below for radio removal video)
https://www.youtube.com/watch?v=Gcrlufo1ctc
https://www.youtube.com/watch?v=WTbWYNJTSDs
1. Locate radio 20-pin plug, press black release tab to disconnect (See
Fig. 1)
Fig. 1
2. Connect 20-pin plug from step 1, to matting socket (white) on
installation harness (See Fig. 2).
Fig. 2
harness
3. Connect installation harness 20-pin black/gray plug (See Fig. 2) to
radio 20-pin socket vacated in step 1
4. Disconnect factory antenna plug from radio socket (See Fig. 3)
Fig. 3

5. Connect factory antenna plug (See Fig. 3) to included antenna socket
in Fig. 4 marked “TO ANTENNA”
Fig. 4
6. Connect included antenna plug in Fig. 4 marked “TO RADIO” to vacated
antenna socket on radio (in step 4). Ensure plug is fully seated.
7. By default, the modulator tuning frequency is set to 87.9MHz. If use
wished to switch to 88.3MHz; locate frequency switch (top left), insert
small screwdriver etc. to move switch to desired frequency (See Fig. 5)
Fig. 5
8. Secure module behind radio cavity and proceed to next step.
9. Make note of frequency selection from step 7 as this will be needed in
Bluetooth operation section below.
Optional AUX input
Any RCA cable will suffice or purchase our AUX cable and connect 3.5mm
(headphone jack) devices. Drill l9/64-inch hole in mounting panel and secure
jack to dashboard, ensure mounting panel is no thicker than 4mm otherwise the
threads won’t protrude enough to engage nut. (If necessary, use Dremel or
sander to thin panel).
Note: AUX connection not required for music streaming to function
Pairing
Pairing process varies among devices but basic steps are the same. This
process is done upon initial install and should not have to be repeated.
1. Turn ignition and radio “ON”
2. Open smart device Bluetooth Settings and enable Bluetooth
3. Tap Scan (Search) for devices .
4. Wait for Bluetooth device name to appear and tap
5. Connected is heard on car speakers

Bluetooth operation
1. Turn ignition and radio “ON”
2. Set radio station to tuning frequently selected in step 5. (88.3 or 87.9Mhz)
Once the correct frequency has been selected, it is a good idea to store it
to one of the radios presents buttons (e.g., preset #1)
3. Launch smart device streaming app.
4. Ensure smart device volume is between 97% and MAX (important)
5. Use radio volume control button to set playback level. If distorted, lower
volume on smart device.
Warning:Playlist and Track selection, text display are*NOT*
possible from radio. Use audio device built-in controls to access
and control audio files.
Listening to optional AUX device
1. Pause streaming or disable Bluetooth on smart device (important).
2. Connect audio device to module AUX input jack/plug
3. Place audio device in playback mode
4. Ensure audio device volume is between 97% and MAX
5. Use radio volume control button to set playback level. If distorted; lower
volume on audio device.
Notes:
1. often times Bluetooth playback will be louder than AUX. As a precaution always
lower radio volume when switching between AUX and Bluetooth
2. If phone rings during streaming session; music is muted and call number
announced on car speakers. You must answer call on handset (The A2D-C5FM
module does no support hands-free calls). Once call ends, streaming resumes.
3. Unpair smart device when listening to AUX device.
Frequently asked questions and troubleshooting
1. What is the difference between FM modulator and FM transmitter?
Unlike FM transmitters, this FM modulator kit connects directly to the C5
radio antenna socket (input) to provide high quality FM sound as you
would expect from a commercial radio station. FM transmitters signal is
sent over the airwaves, picked up by the car antenna mast and prone to
interference depending on weather conditions, topology, and landscape.
2. No audio is heard even though radio is on the right tuning frequency
Check smart device has paired and volume is set to 97 and MAX and
antenna is fully inserted to radio socket.
3. How good is the sound quality from this module?
Contrary to what you may have heard, the modulator included in this kit
sounds as good as any FM station and far better than FM transmitters.
4. It is possible to install the A2D-C5FM at the 10-pin plug in trunk/hatch?
NO; the A2D-C5FM installs at the radio only. (Radio removal required).
5. Does the A2D-C5FM work on all C5 radios?
YES. This module works on all C5 radios with or without optional CD
changer, with or without BOSE.
6. Can I control smart device from radio buttons?
NO; you must continue to use audio device built-in controls and radio
volume control button to set playback level.
7. I don’t hear music but instead static/distortion. What do you suggest?
Ensure radio is set to selected frequency, antenna is fully inserted and
device volume level is 97% or higher.
8. Will radio mute when I receive or make a phone call?
Yes and call number announced. Answer calls on handset. Streaming
resumes upon ending call. Mute not possible if listening to AUX device.
9. Why do I hear static when device is not connected (paired)?
You may hear static when device is not pair or playing music because the
modulator requires a signal in order to work as described. Place device in
playback mode and lower radio volume. If static is still present, please
proceed to check device volume is between 97% and MAX and antenna has
not disconnected from radio.

Disclaimer
• This product has no affiliation with GM, Apple etc.
• There are no warranties expressed or implied by purchase of this product
• We’re not liable for misuse of this product.
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