Notices
Audio/Electronics Stereo System Installation Info, Amplifiers, Subwoofers, Radar Detectors, Police Scanners, and CB Radios for the Corvette

C4 Audio FAQ

 
Old 05-09-2008, 04:18 PM
  #41  
Madmikeee
CF Senior Member
 
Madmikeee's Avatar
 
Member Since: Feb 2002
Location: Sometimes I wonder... why is that frisbee getting bigger? Then it hits me.
Posts: 29,700
Received 0 Likes on 0 Posts
Cruise-In X Veteran
St. Jude Donor '06
Default

Looks like 75% of the links given in the first post are dead. Too bad, that kills alot of great info and pics.
Madmikeee is offline  
Old 06-28-2008, 10:23 AM
  #42  
drojt
Junior Member
 
Member Since: May 2004
Location: Leesburg VA
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default C4 Audio (SYS Issue) Help Please

Greets All,
I am experiencing the infamous aftermarket radio HU “SYS” issue in a 91 nonBose system. I have poured all over the site to find the sticky that refers to the schematic detailing the “how-to” fix and a nice thread with photos but my issue is that I do not have the OEM front end of the radio wiring harness (HU) and am using an aftermarket GM product which indicates that the dimmer and illumination wires are orange/orange and white. This is where I placed my resistors . . . I need assistance in the naming of the wires that are to be resistor connected vice gray and purple/white. Although installed, I'm still getting the "SYS". My battery tests fine and I believe that I am missing a simple step. I know that I am close to fixing this issue. Thanks in advance as any advice would be greatly appreciated.
drojt is offline  
Old 06-30-2008, 06:19 PM
  #43  
drojt
Junior Member
 
Member Since: May 2004
Location: Leesburg VA
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default My “SYS” issue is finally solved!

Greets Again,

My “SYS” issue is finally solved.

As a follow-up, what was clearly missing per the TSB diagram is a bit of generic dialog. Per other threads, yes, connecting the purple/white and gray/black wires to resistors per the schematic (TSB) works. However no one has articulated where these cables are.

Here is the solution:

1. Locate the purple/white and gray/black wires from an OEM input wiring harness that connects to the original radio. You may have to look for it but please note that it is separate from any aftermarket wiring harness (my mistake!). Mine was located very close to the firewall directly behind the radio and led to the driver’s side.

2. Next extend the ends of both resistors (1K Ohm .5watt) via 14 gage wire (I used a soldering gun and extended mine 4 inches on each end) and connect one end to the power supply lead (preferably the AC Switch) and the other ends..one to the purple/white wire and the other to the gray/blk wire.

3. Cover all wires / reconnect the battery cable and you are done!

This process took me approximately 30 minutes and was rather easy once I figured out what I was doing.

Hope that this helps those who are having similar trouble.
drojt is offline  
Old 07-19-2008, 03:26 AM
  #44  
crowbarL98
Junior Member
 
crowbarL98's Avatar
 
Member Since: Feb 2007
Location: Grand Haven MI
Posts: 22
Likes: 0
Received 0 Likes on 0 Posts
Default

I have a '91 that had a non-Bose as well. After living with the SYS flash for quite some time with an aftermarket deck, I've decided to put in the resistors during my current stereo upgrade.

This clarification was helpful, thanks!

crowbarL98 is offline  
Old 10-24-2008, 12:54 AM
  #45  
Chilliwack vettes
CF Senior Member
 
Chilliwack vettes's Avatar
 
Member Since: Aug 2006
Location: Chilliwack B.C.
Posts: 3,267
Received 25 Likes on 24 Posts
Default

Originally Posted by Madmikeee View Post
Looks like 75% of the links given in the first post are dead. Too bad, that kills alot of great info and pics.


I'm starting this project now and could use those pics
Chilliwack vettes is offline  
Old 03-22-2009, 01:34 PM
  #46  
telboy
Junior Member
 
Member Since: Mar 2006
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Default 84 Bose

The original Bose radio/cassette in my '84 died( not surprising after 25 years! )
I bought a F series Bose CD/radio as a replacement.
My problem is..... Can I get this set to work properly? NO!
Tried all sorts of wiring combinations. Wired it with and without the shield wires connected,but makes no difference.Get one front speaker working great, other one dead or well down on volume. Rears the same or worse.The amp/speaker units are all good, so it's 'aint them.
All other functions on the head unit are fine. i.e. CD, radio tuning, ariel operation etc. Just the speaker problem.
I was told by the seller that the radio would work with any Bose equipped '84 to '89.I was also told by someone more knowledgeable than me that the F series will work O.K. on an '85 or later C4's.Is the Bose system very different on '84 Vettes to later models?
I'm based in the U.K. so getting info on this in England is not easy.
Any ideas gratefully received.
telboy is offline  
Old 06-26-2009, 03:22 PM
  #47  
Swedish Hot Rod
CF Member
 
Swedish Hot Rod's Avatar
 
Member Since: Feb 2005
Location: Balsta
Posts: 53
Likes: 0
Received 0 Likes on 0 Posts
Default

Great FAQ, had lots of help from this when replacing my stock Bose head unit.

This was done on my 1992 and I replaced it with a JVC KW-XG701 (double-DIN radio/CD with USB/3,5 mm on the front), kept the Bose speakers via a Peripherals SVEN4 interface.

Some comments on the first post in this FAQ:
- I had no problems to unhook the antenna lead and just hook it up to the new HU, no need for any extension, adapter yes.
- For ground I used a black M6 screw (10 mm socket) that you can find if you remove the glove box and look forward on the left side of it. There are two of them attached to a big metal plate, facing forward.
Swedish Hot Rod is offline  
Old 01-13-2012, 02:45 PM
  #48  
yakmastermax
CF Senior Member
 
yakmastermax's Avatar
 
Member Since: Apr 2011
Location: Austin Tx
Posts: 142
Likes: 0
Received 0 Likes on 0 Posts
Default

Is anyone making storage bin sub enclosures like the kind OrthoAggie was making?
yakmastermax is offline  
Old 01-30-2012, 10:02 AM
  #49  
VetteMed
Tech Contributor
 
VetteMed's Avatar
 
Member Since: Aug 2005
Location: Orlando Florida
Posts: 6,323
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by yakmastermax View Post
Is anyone making storage bin sub enclosures like the kind OrthoAggie was making?
I don't think anyone is manufacturing them on a commercial scale... It's easy enough to put 8" subs in the rear speaker housings, unless you're going for BIG bass, in which case the storage bins are less than ideal anyway. Just MHO...
VetteMed is offline  
Old 01-31-2012, 10:40 AM
  #50  
yakmastermax
CF Senior Member
 
yakmastermax's Avatar
 
Member Since: Apr 2011
Location: Austin Tx
Posts: 142
Likes: 0
Received 0 Likes on 0 Posts
Default

Okay thanks.Indeed i am going for big bass. Do you think a sub box could fit in the rear in such a way that the targa can still be stowed? I'm thinking now of making my own "shallow" sub box and just putting that on top of the storage bins.
yakmastermax is offline  
Old 01-31-2012, 11:16 AM
  #51  
383tpimachine
CF Senior Member
 
383tpimachine's Avatar
 
Member Since: Feb 2008
Location: Texas
Posts: 1,267
Received 26 Likes on 21 Posts
Default

Originally Posted by yakmastermax View Post
Okay thanks.Indeed i am going for big bass. Do you think a sub box could fit in the rear in such a way that the targa can still be stowed? I'm thinking now of making my own "shallow" sub box and just putting that on top of the storage bins.
Easily. Set the top in a measure. Should be able to slope a box with 15-18in tall in the rear and angle the subs towards the front with 10-12in in the front.
383tpimachine is offline  
Old 01-31-2012, 12:34 PM
  #52  
yakmastermax
CF Senior Member
 
yakmastermax's Avatar
 
Member Since: Apr 2011
Location: Austin Tx
Posts: 142
Likes: 0
Received 0 Likes on 0 Posts
Default

are there any C4 specific "big-3" upgrade threads? could not find anything in the FAQ or search. thanks for the dimensions.
yakmastermax is offline  
Old 01-31-2012, 03:41 PM
  #53  
383tpimachine
CF Senior Member
 
383tpimachine's Avatar
 
Member Since: Feb 2008
Location: Texas
Posts: 1,267
Received 26 Likes on 21 Posts
Default

No big three thread that is specific but I have done them and it helped quite a bit. I have a sub in each storage bin and 6x9s in the rear hatch 5.25 in the doors. need more mid.
383tpimachine is offline  
Old 07-09-2012, 08:13 PM
  #54  
AirForceOne!
CF Senior Member
 
AirForceOne!'s Avatar
 
Member Since: Jul 2012
Location: Nampa Idaho
Posts: 1,796
Received 13 Likes on 13 Posts
Default

Now I'm unsure of changing out the stock Bose Gold Stereo in my 1990. Is there a way to keep the stock stereo and just get 4 new amplified speakers? I read the stereo doesn't have an amplifier, each speaker has to have one?
AirForceOne! is offline  
Old 09-23-2012, 04:21 PM
  #55  
dvoeltz
CF Member
 
Member Since: Sep 2011
Location: Pierre SD
Posts: 57
Likes: 0
Received 0 Likes on 0 Posts
Default

I didn't find this information in the FAQ but by searching this forum. See

http://forums.corvetteforum.com/audi...lp-please.html

or

http://forums.corvetteforum.com/audi...et-stereo.html

for a possible fix. I wil be trying this myself.
dvoeltz is offline  
Old 06-04-2013, 10:26 PM
  #56  
Breezie
Junior Member
 
Breezie's Avatar
 
Member Since: Mar 2011
Location: North Carolina
Posts: 39
Likes: 0
Received 0 Likes on 0 Posts
Default Dead Link

The link explaining how to remove the head unit from 1994 is bad. Could you post another one explaining the removal?
Thanks,
Breezie
Breezie is offline  
Old 08-16-2013, 05:17 PM
  #57  
corvette95
CF Senior Member
 
Member Since: Jul 1999
Location: Decatur, Alabama
Posts: 2,449
Received 13 Likes on 13 Posts
Default

Does anyone have same day audio's website, phone number in VA?
corvette95 is offline  
Old 11-26-2013, 08:29 PM
  #58  
bogus
CF Senior Member
Thread Starter
 
Member Since: Aug 2000
Location: San Pedro CA
Posts: 40,124
Received 9 Likes on 9 Posts
Default

Now that I am no longer persona non grata, I can update the faq and get the links up again.

At least some of them.
bogus is offline  
Old 08-25-2016, 06:14 PM
  #59  
SELLC
CF Senior Member
 
Member Since: Jul 2016
Location: Plymouth MI
Posts: 222
Received 11 Likes on 11 Posts
Default

Originally Posted by Swedish Hot Rod View Post
Great FAQ, had lots of help from this when replacing my stock Bose head unit.

This was done on my 1992 and I replaced it with a JVC KW-XG701 (double-DIN radio/CD with USB/3,5 mm on the front), kept the Bose speakers via a Peripherals SVEN4 interface.

Some comments on the first post in this FAQ:
- I had no problems to unhook the antenna lead and just hook it up to the new HU, no need for any extension, adapter yes.
- For ground I used a black M6 screw (10 mm socket) that you can find if you remove the glove box and look forward on the left side of it. There are two of them attached to a big metal plate, facing forward.
This is an old post from 2009, but I have some people telling me a double din will not fit. What's the deal? Does it fit with some trimming, or without trimming?
SELLC is offline  
Old 08-25-2016, 07:54 PM
  #60  
AirForceOne!
CF Senior Member
 
AirForceOne!'s Avatar
 
Member Since: Jul 2012
Location: Nampa Idaho
Posts: 1,796
Received 13 Likes on 13 Posts
Default

Originally Posted by SELLC View Post
This is an old post from 2009, but I have some people telling me a double din will not fit. What's the deal? Does it fit with some trimming, or without trimming?

I went with the CDE W235BT Double Din, fit perfect with no modification at all

AirForceOne! is offline  

Thread Tools
Search this Thread
Quick Reply: C4 Audio FAQ


Sponsored Ads
Vendor Directory

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: