Discount Car Stereo C5-HF User manual

Courtesy of: DiscountCarStereo.com
Serving the internet community since 1995
C5-HF
QuickStartBluetoothInstallationGuideforselect1997-04Corvettewithout12-discchanger
Created Februa 19, 2013
Revised January 22, 2020

Introduction:
Safety comes first when you’re on the road, so having an intuitive and easy to
use Bluetooth kit is essential to reducing driver distraction. The C5-HF kit is
compatible with virtually all Bluetooth phones, and sounds great for mobile
conversations, streaming music or listening to AUX device. In addition, a USB
charging port is included to charge your device. One button with built-in
microphone conveniently installed on the dash is used to launch Voice
Recognition application (Siri, Google Now, Assistant etc.), initiate phone calls,
launch applications and more. Thanks to the C5-HF Kit you keep factory radio,
CD changer while enjoying Bluetooth features only available on newer cars.
Note: This kit is optimized for C5 without optional 12-disc changer. If
vehicle has a working 12-Disc changer, purchase our C5CD-HF instead.
See Frequently Asked question at the end of this guide for more details.
Installation: (To radio)
Remove radio from dashboard to gain access to connector. ( See FAQ
section and the end of this guide for details) or click the following link:
https://www.youtube.com/watch?v=WTbWYNJTSDs
1. Disconnect factory 20-pin plug from radio (See Fig. 1)
Fig. 1
Radio connector
2. Connect factory 20-pin plug from step 1 to installation harness 20-pin
connector (white) (See Fig. 2).
Fig. 2
installation harness
3. Connect installation harness 20-pin plug (black/gray) (See Fig. 2) to
radio 20-pin connector vacated in step 1
4. Connect audio cable 3.5mm plug (See Fig. 3) to module short pigtail
3.5mm jack (See Fig. 5)
5. Connect audio cable 8-pin plug (See Fig. 3) to AUX-BOX 8-pin
connector (see Fig. 3a)
Fig.3
Audio cable
2. Connect included 3.5mm male-male cable (See Fig. 6) to “AUX” input
jack on module (See Fig. 4), and the other end aux device location
(within 3 ft.)
3. Verity dip-switches 3 and 8 on AUX-BOX are “ON” or down. (See Fig.
3c) All others must remain “OFF” or UP.

Warning: Dip switches must be set prior to connecting AUX-BOX to 22-
pin plug otherwise full reset is required--- see FAQ
4. Connect 22-pin plug from installation harness to 22-pin connector on
AUX-BOX (See Fig. 3b)
Fig. 3a
Fig. 3b
Fig. 3c
Fig. 4
Bluetooth module
Fig. 5
module pigtail
Fig. 6
3.5male to male audio cable
5. Connect or Tap red wire to ACC (Accessory) supply power in your
vehicle. Here are some suggestions:
In 1997-03, locate 3-pin plug under passenger toe board near BCM
(may be covered with black duct tape) --- this plug has an orange,
yellow and black wire. Tap the yellow Accessory wire. (See Fig. 7)

Fig. 7
Note: It appears these wires were omitted in 2004 model
Alternates include fuse: #11 or #22 of interior fuse box. Other possible fuse
location highlighted in red. (See Fig. 8). Please turn on all accessories,
including wipers, rear defroster, A/C and test for engine noise prior to final
install.
Fig. 8
toe board fuse box
6. Connect control button/mic plug (See Fig. 9) to Module blue (MIC)
input jack (See Fig. 4)
Fig. 9
Control button/Microphone
7. Consider install location for control/mic button. Control button must
be within reach and facing driver for voice commands and phone dialog
(cable is 6ft. long). We recommend completing the rest of the
install prior to securing the control/mic button to the dash. To
install simply remove tape backing and secure to surface
Mic/control button custom installed next to traction control button
Ensure no ventilation duct is pointed towards the mic.
It is best to mount button facing driver

USB Charging Port Installation
USB port supports charging- not for thumb drives etc.
A. Flush to dash/panel requires drilling a ¾” hole in the dash
B. Flush with Support bracket (use this option to mount USB terminal
wherever your installation demands without drilling)
C. No USB Mount- (default)
A. Flush to Dash or Panel (drilling required)
1. Drill a ¾” hole in the dash or panel using a step drill bit or equivalent
(See Fig. 10)
Fig. 10
Step drill bit
2. Insert the 3ft. USB cable male terminal (See Fig. 11) through the ¾”
hole created in step 1 and plug into USB port on Module (See Fig. 11)
Fig. 11
Flush mount 3 ft. USB cable
Fig. 12
Module USB port
3. Push USB (See Fig. 13) until it snaps in place and flush with mounting
surface (See Fig. 14)
Fig. 13
Flush mount USB Terminal
Fig. 14
Flush mounted to dash
4. Tuck and secure any extra wire from moving parts and test operation

B. USB with Bracket Mount (No drilling)
1. Locate a flat surface at location of choice within 3.2 ft. of radio and
mount USB support bracket (See Fig. 15) to surface using
adhesive/tape or screws.
Fig. 15
USB mounting bracket
2. Insert USB male terminal through hole in bracket (See Fig. 16) and
connect to USB port on Module (See Fig. 4)
Fig. 16
3. Push USB head until it snaps in place and flush (See Fig. 17)
Fig. 17
4. Secure USB to dash with screws (included) or adhesive.
5. Tuck and secure any extra wire away from moving parts and test
operation ( See Bluetooth Pairing and Connection )
AUX + USB Option
Users can purchase our 3.5-USB adapter for aux input + USB Charging.
Fig. 18
Bluetooth Pairing and Connection
This process is required the first time you use the C5-HF. After initial pairing,
the C5-HF automatically reconnects with paired phone upon entering vehicle.
1. Turn the vehicle ignition to “ON”.
2. The Red LED inside module will begin to flash
3. Access your Smartphone Bluetooth menu settings, and search (scan)
for devices.
4. Select the G2 and click “Connect”
Note: Supports multiple phones but connects to only one phone at a time.
Warning! Caller ID and text display are not possible in CD Changer mode.
Operating Bluetooth device is by pressing the control button and your Voice
Recognition application. Use the factory radio volume button to control playback
level.

Bluetooth Operation
1. Press “AUX” button on radio to enter AUX Mode.
2. Use Radio Volume button to set playback level
Music Commands
To
Proceed this way
Pause a Song
Press and release button
Resume Play
Press and release button
Skip to next song
Press button twice
Skip to Previous Song
Press button 3 times
Activate AUX Playback*
Press button 4 times
Activate Voice Control
Press/hold button for 2 seconds
Switch out of XM Mode
Press and release button
Phone Commands
To
Proceed this way
Answer call
Press and release button
End call
Press and release button
Reject incoming call
Press button twice (send call to Voice Mail)
Cancel outgoing call
Press button twice
Activate Voice Control
Press/hold button for 2 seconds
Notes:
1. To reset Module press and Hold button for 5 seconds (will not un-pair
phone or erase stored phones)
2. On incoming calls, ring tone will play on car speakers (Radio must be in AUX
mode)
3. Bluetooth range is approximately 30 ft.
4. Voice command compatible with Apple (Siri), Android (Google Now),
Blackberry (Assistant)
5. * Control button does not control CD Changer/Aux functions.
If successful go ahead and Reinstall the Radio
Feature comparison: Bluetooth profiles; namely Hands-free calling
(See Table 1) and music streaming (A2DP). Music streaming kits (See Table2)
Table 1
Modules
A2DIY-C5CD
C5CD-HF
A2DIY-C5
C5-HF
Retains changer playback
YES
YES*
NO
NO
Requires working CD changer
YES
YES
NO
NO
Audio input jack (Aux in)
YES*
YES
YES
YES
USB charging port
YES*
included
YES*
included
Hands-free calling (HPF)
YES
YES
YES
YES
Music Streaming (A2DP)
YES
YES
YES
YES
Connection (To Radio)
YES
YES
YES
YES
Connection (trunk)
NO
NO
NO
NO
VR support
YES
YES
YES
YES
Wireless remote control
included
NO
included
NO
Controls from radio buttons
NO
NO
NO
NO
Table 2
Modules
A2D-C5
BLU-C5
Retains changer playback
YES
NO
Requires working CD changer
YES
NO
Audio input jack (Aux in)
NO
YES²
USB charging port
YES*
YES*
Hands-free calling (HPF)
NO
NO
Music Streaming (A2DP)
YES
YES
Connection (To Radio)
YES
YES
Connection (trunk)
YES
NO
VR support (e.g. Siri)
YES**
YES**
Wireless remote control
included
YES**
Controls from radio buttons
NO
NO
*Optional (Select from product order page)
** Voice recognition possible with optional remote control
² PX35 cable required (sold separately)

Frequent asked questions
1. What’s the difference between the C5-HF and C5CD-HF?
The only difference is the C5CD-HF requires a 12-disc Changer for
operation. The C5-HF includes module to enable AUX button on radio.
2. My C5 has a 12-disc changer. Will the C5-HF work the CD changer?
For the C5-HF to work, the 12-disc changer (if present) must be
disconnected. Purchase our A2DIY-C5CD or C5CD-HF to retain 12-disc
changer operation
3. Why is it necessary to run 12V Acc. wire to fuse panel?
Unfortunately there is no Accessory supply on radio harness. Fuse panel is
one of many places to find 12V Accessory supply
4. Can I control Smartphone music from radio buttons?
NO; you must use Smartphone built-in controls or control button
and/or voice commands to operate the device. Radio volume button is
used to set playback level.
5. How to I reset Bluetooth Module?
Press and hold control button for 5 seconds.
6. I use aux input to connect satellite radio kit, but I don’t hear XM.
Please help
Press AUX button on radio, press control button 4 times. At this point XM
should play. To return to music stream press and release control button.
7. Where is the best place to install control button/microphone?
We found having the control button/mic mounted higher on the dash work
best, but users can experiment with different location and decide.
8. Will the stereo mute when I receive or make a phone call?
Muting is possible unless only if radio is in aux mode (Bluetooth). If listening
to AM/FM or CD/Tape built-into radio, the system will not mute. To be
connected with caller, press AUX button on radio and a single press of
control button
9. My second phone does not pair or find module?
In order to pair another phone make sure no other phones are connected.
Once Bluetooth is turned off, the module will be ready for pairing.
10. Will I be able to use Module USB port to connect and play music from
flash drives?
NO. USB port is for charging only.
11. How to remove radio from dashboard
1. Pry out on the ride control switch and disconnect the wiring.
2. Unsnap the switch trim and remove (2) 10mm hex-head bolts exposed.
3. Open the center console door, remove (4) screws from the inner hinge
and remove the door.
4. Open the ashtray and remove (1) screw exposed.
5. Remove the ashtray and (1) screw exposed.
6. Unclip the small grill to the left of the ignition switch and remove (1)
screw exposed. Unclip the base of the radio trim bezel and remove or
copy and paste link below into browser:
https://www.youtube.com/watch?v=WTbWYNJTSDs
13. I have installed the kit as directed, but radio will enter AUX mode.
What could be wrong?
The AUX-BOX may have gone amiss or the entire system needs to be reset.
Prior to requesting help, we recommend resetting the system as follows:
1. Disconnect car battery or radio’s main power/speaker plug
2. Move all AUX-BOX dip-switches to “OFF” or Up
3. After 15-20 minutes, move dip switches 3 and 8 to “ON” of DOWN (All
other remain up or “OFF”)
4. Reconnect car battery or radio’s main power/speaker plug (whichever
was initially disconnected)
5. Press AUX button on radio and if all went well radio should now enter
AUX mode
Disclaimer
• This product has no affiliation with GM or Apple
• When possible, professional installation is recommended
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© 1995-Jan-20 Discount Car Stereo, Inc. All rights reserved. Information in this document is
subject to change without notice. Other products and companies referred to herein are
trademarks or registered trademarks of their respective companies or mark holders.