Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > Car Audio
Register Forgot Password?

Car Audio Car audio related questions and helpful hints for building the best sound system for your car or getting the most out of what you have.

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 07-03-2010, 08:12 AM   #1
Member
 
SolarGoldRaptor's Avatar
 
Join Date: Sep 2008
Location: Dunkerque - France
Posts: 399
Car: 1984 Pontiac Firebird Trans Am
Engine: V8 5.0L HO (L69)
Transmission: B&W T5
Axle/Gears: 3.73 limited slip

Classifieds Rating: (0)
Send a message via MSN to SolarGoldRaptor
How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

Hi guys,

I've finally found the original UU6 deck for my T/A. I want to add an auxiliary input like on those unit seen on eBay, but I want to do it myself. I don't want to hear about FM modulators and related.


Some of the steps are explained here but it's not very clear, it looks like a simple mod but it's a little hard to figure out how to wire up the input.

The cassette unit is plugged to the main unit with this connector:
Click the image to open in full size.

Here's what each wire correspond to :
orange = right audio channel
blanc = left audio channel
rouge = +12V supply for the cassette unit
brown = select tape as input when shorted to +12V (red wire)
red/white = select radio as input when shorted to +12V (red wire)

The easiest would be to wire a 3.5 input to the orange and white wires with a ground somewhere. The problem is that each time you would want to plug your auxiliary device, you would have to insert a cassette or whatever non metallic thing so the unit thinks a cassette is inserted.

I don't want that, I want the signal coming from the input to replace the cassette (or radio maybe) signal when I insert a plug in.
I think I have to start with a switchable 3.5 input (5 pin), are these the same found on computer sound cards ?

Is there an electronics expert here that can explain everything for those who want to keep their original radio with a modern "touch".

Thanks
__________________
- 1984 Trans Am - L69 - MK5 - WS6 - GT4 - W62 - CC1 - C60 - AQ9 - 82U/16A/60C (Semi restoration)

Last edited by SolarGoldRaptor; 07-14-2010 at 08:33 AM. Reason: Solved
SolarGoldRaptor is offline vBGarage Page   Reply With Quote
Old 07-04-2010, 09:11 AM   #2
Junior Member
 
Join Date: Mar 2010
Location: Philly, PA
Posts: 27
Car: 1982 Z28
Engine: Stock 305 4BBL - New QJet
Transmission: 700R4
Axle/Gears: Stock

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ?

im guessing a simple 3.5 extension cable would work...split n splice the two cables inside to the left and right channel wire...there has to be a way you can jump the 12 volt to the cassette input so that it is always on...try it out...not like youll short something major out! LOL
__________________
1982 Camaro Z28
clomkfly is offline vBGarage Page   Reply With Quote
Old 07-04-2010, 11:17 AM   #3
Junior Member
 
Join Date: May 2010
Posts: 33

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ?

i would just wire the tape trigger to a micro toggle switch. Hide it someware under the dash
Salvo is offline vBGarage Page   Reply With Quote
Old 07-04-2010, 12:41 PM   #4
Junior Member
 
Join Date: Mar 2010
Location: Philly, PA
Posts: 27
Car: 1982 Z28
Engine: Stock 305 4BBL - New QJet
Transmission: 700R4
Axle/Gears: Stock

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ?

Quote:
Originally Posted by Salvo View Post
i would just wire the tape trigger to a micro toggle switch. Hide it someware under the dash
nice! that would work
clomkfly is offline vBGarage Page   Reply With Quote
Old 07-04-2010, 01:11 PM   #5
Junior Member
 
Join Date: Jun 2006
Location: Milwaukee, WI
Posts: 79
Car: 1985 Berlinetta
Engine: 5.0 LG4
Transmission: 700R4
Axle/Gears: 3.08 Peg Leg

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ?

I've been looking into this since last fall for the radio in my '85 Berlinetta. It has the 'pod'-type radio.
I've been doing electronics repair for the last 25 years. Mostly computerized display systems for aircraft cockpits. Digital, analog, thru-hole and surface mount. I've worked with them all over the years.

The best way to do this is to solder an input jack to an unused input on the multiplexer chip, then force the control lines to use that input. I found that my Berlinetta radio uses a mux chip with four inputs. Only two are used (radio, cassette). I've searched for a 3.5mm jack that would allow me to just plug-and-go, but haven't found one yet. I found them in 1/4" jacks, but I think because of their size, they're not made in 3.5mm. So that leaves an external switch to choose inputs.

I've recently tested this using a Zune for audio input, and just forcing the radio to use it. See this post for more detail. http://www.thirdgen.org/techboard/ca...o-rebuild.html

I haven't looked at the regular Delco radios in other Third-Gens, but I have to think they are similar. Does anybody have a schematic? If you can email them to me, I'll see if and where an aux input could be soldered to.
DaveBerlinetta is offline vBGarage Page   Reply With Quote
Old 07-05-2010, 04:28 PM   #6
Member
 
SolarGoldRaptor's Avatar
 
Join Date: Sep 2008
Location: Dunkerque - France
Posts: 399
Car: 1984 Pontiac Firebird Trans Am
Engine: V8 5.0L HO (L69)
Transmission: B&W T5
Axle/Gears: 3.73 limited slip

Classifieds Rating: (0)
Send a message via MSN to SolarGoldRaptor
Re: How to add an auxiliary input on an original Delco unit ?

I just found this pdf : http://www.antechlabs.com/K0GFM/DelcoRadioMod.pdf

It's for even older AM Delco radios, but it explains how to wire the 3.5 input.
SolarGoldRaptor is offline vBGarage Page   Reply With Quote
Old 07-06-2010, 05:04 AM   #7
Junior Member
 
Join Date: Jun 2006
Location: Milwaukee, WI
Posts: 79
Car: 1985 Berlinetta
Engine: 5.0 LG4
Transmission: 700R4
Axle/Gears: 3.08 Peg Leg

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ?

That setup works, but it's for connecting a stereo input device to an old mono AM radio. It is using the same technique that the eBay guys are using. This was my first thought on how to do it, but I thought it would add too much noise to the signal from having to route the original low-level audio signal out of the box, thru a jack and then back in. Looking at the eBay setups, that is exactly what they're doing.
DaveBerlinetta is offline vBGarage Page   Reply With Quote
Old 07-12-2010, 07:09 AM   #8
Member
 
SolarGoldRaptor's Avatar
 
Join Date: Sep 2008
Location: Dunkerque - France
Posts: 399
Car: 1984 Pontiac Firebird Trans Am
Engine: V8 5.0L HO (L69)
Transmission: B&W T5
Axle/Gears: 3.73 limited slip

Classifieds Rating: (0)
Send a message via MSN to SolarGoldRaptor
Re: How to add an auxiliary input on an original Delco unit ?

I've done it ! It works BUT the sound from the input is extremely low, I can barely hear a thing.
I've seen somewhere to add a 100k ohms resistor, if someone can guide me through this.

I will make a diagram to show everyone what I did.
SolarGoldRaptor is offline vBGarage Page   Reply With Quote
Old 07-12-2010, 12:41 PM   #9
Member
 
SolarGoldRaptor's Avatar
 
Join Date: Sep 2008
Location: Dunkerque - France
Posts: 399
Car: 1984 Pontiac Firebird Trans Am
Engine: V8 5.0L HO (L69)
Transmission: B&W T5
Axle/Gears: 3.73 limited slip

Classifieds Rating: (0)
Send a message via MSN to SolarGoldRaptor
Re: How to add an auxiliary input on an original Delco unit ?

After a lot of reading, it appears that the sound quality coming from the cassette deck is poor unless it reads a cassette. So I'm changing my plans.
The best way to do it would be to send the signal directly into the amp, to cut the radio signal.
The guys that sell those modified Delco radios are apparently doing it this way. Now we need to find out how they do it.
Now it gets a little more complicated.

This is what this guy did : http://www.youtube.com/watch?v=LdP-Knjuoi0
SolarGoldRaptor is offline vBGarage Page   Reply With Quote
Old 07-14-2010, 06:59 AM   #10
Member
 
SolarGoldRaptor's Avatar
 
Join Date: Sep 2008
Location: Dunkerque - France
Posts: 399
Car: 1984 Pontiac Firebird Trans Am
Engine: V8 5.0L HO (L69)
Transmission: B&W T5
Axle/Gears: 3.73 limited slip

Classifieds Rating: (0)
Send a message via MSN to SolarGoldRaptor
Re: How to add an auxiliary input on an original Delco unit ?

Yesterday I decided to rebuild my setup all over (still with the cassette wires). I used new components, new wires, and better solders. And it works pretty darn good now !
The sound quality is excellent, I'm really surprised. I've only used two trashed Blaupunkt speakers from the late seventies, but even with those the sound is great. The equalizer works like a charm.
I'm must have messed something up though as the tape player won't work at all.

I will make a diagram for those who are interested in adding an input.
It's really easy, this is all you need :
- wires of different colours (I got mine from a trashed Peugeot 405 wiring harness)
- DPDT switch (six poles, on/on)
- 5 poles switchable jack input (the same that you find on sound card and motherboards)
- soldering iron
- solder
- electrical tape
- heat shrinking tubing (not necessary but that is much better and cleaner than tape)
- a bit of patience and care

I already had the tools, I found the components on old computer stuff, so I haven't spent a dime on this.
There must be a way to use the jack as a switch but I haven't found out how.
SolarGoldRaptor is offline vBGarage Page   Reply With Quote
Old 07-14-2010, 07:18 AM   #11
Supreme Member
 
58mark's Avatar
 
Join Date: Jan 2009
Location: Mesquite, Texas
Posts: 3,915
Car: 89 rs, 86 Trans Am
Engine: RS-V6... Trans Am-LG4
Transmission: RS-T5... Trans Am 700r4

Classifieds Rating: (3)
Re: How to add an auxiliary input on an original Delco unit ?

diagram and any pics you have would be awesome, thanks
__________________
58mark is offline vBGarage Page   Reply With Quote
Old 07-14-2010, 08:32 AM   #12
Member
 
SolarGoldRaptor's Avatar
 
Join Date: Sep 2008
Location: Dunkerque - France
Posts: 399
Car: 1984 Pontiac Firebird Trans Am
Engine: V8 5.0L HO (L69)
Transmission: B&W T5
Axle/Gears: 3.73 limited slip

Classifieds Rating: (0)
Send a message via MSN to SolarGoldRaptor
Re: How to add an auxiliary input on an original Delco unit ? SOLVED !

Here's the diagram, hope it helps :
Click the image to open in full size.

If any electronics expert has some recommendations, I'd love to hear them !

I listened to music for 50 minutes last night with the unit with no problem.
SolarGoldRaptor is offline vBGarage Page   Reply With Quote
Old 04-17-2011, 10:54 PM   #13
Junior Member
 
squibbles's Avatar
 
Join Date: Jul 2010
Location: north texas
Posts: 35
Car: 1985 firebird
Engine: v6
Transmission: turbo auto
Axle/Gears: ?hellifiknow?

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

ok ive fried my radio, not by incorrect wiring but because i think its old. i i pushed the volume control in tape mode and it smoked and fried my radio.
squibbles is offline vBGarage Page   Reply With Quote
Old 10-26-2011, 02:40 PM   #14
Member
 
Foster382's Avatar
 
Join Date: Jan 2010
Location: Pasadena, TX
Posts: 303
Car: 1991 Formula
Engine: 350TBI
Transmission: 700r4
Axle/Gears: 2.73

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

Numb this, I just finished doing it to my car
Foster382 is offline vBGarage Page   Reply With Quote
Old 10-26-2011, 08:31 PM   #15
Junior Member
 
Join Date: Oct 2011
Location: NJ
Posts: 8
Car: Still dreaming

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

http://www.google.com/products/catal...ed=0CHYQ8wIwAA
Octane is offline vBGarage Page   Reply With Quote
Old 10-26-2011, 08:39 PM   #16
Supreme Member
 
58mark's Avatar
 
Join Date: Jan 2009
Location: Mesquite, Texas
Posts: 3,915
Car: 89 rs, 86 Trans Am
Engine: RS-V6... Trans Am-LG4
Transmission: RS-T5... Trans Am 700r4

Classifieds Rating: (3)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

I've used those... two problems with them...


first, they sound muddy, like a cassette... go figure

second, a 20 year old radio isn't likely to have the cassette desk in working order. some do, most don't
58mark is offline vBGarage Page   Reply With Quote
Old 10-27-2011, 02:08 PM   #17
Member
 
Foster382's Avatar
 
Join Date: Jan 2010
Location: Pasadena, TX
Posts: 303
Car: 1991 Formula
Engine: 350TBI
Transmission: 700r4
Axle/Gears: 2.73

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

Quote:
Originally Posted by 58mark View Post
I've used those... two problems with them...


first, they sound muddy, like a cassette... go figure

second, a 20 year old radio isn't likely to have the cassette desk in working order. some do, most don't
Mark, it doesn't use the (cassette player) itself; it uses the wires (power/left/rirgh channel) that go from the cassette player to the radio board harness. The cassette player is what goes bad; not whats leading out from it. the magnetic reader things give out.
trust me my cassette player doesnt work. it wont play my ***** nelson or kiss cassette but i did this yesterday morning with the parts i got from work. it works like a aftermarket head unit with a aux input. i can show you in person because your not far from me.
Foster382 is offline vBGarage Page   Reply With Quote
Old 10-27-2011, 02:10 PM   #18
Supreme Member
 
58mark's Avatar
 
Join Date: Jan 2009
Location: Mesquite, Texas
Posts: 3,915
Car: 89 rs, 86 Trans Am
Engine: RS-V6... Trans Am-LG4
Transmission: RS-T5... Trans Am 700r4

Classifieds Rating: (3)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

Did you see the link in the post right above mine? I was replying to octane
58mark is offline vBGarage Page   Reply With Quote
Old 10-27-2011, 02:12 PM   #19
Member
 
Foster382's Avatar
 
Join Date: Jan 2010
Location: Pasadena, TX
Posts: 303
Car: 1991 Formula
Engine: 350TBI
Transmission: 700r4
Axle/Gears: 2.73

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

sure didnt, im on my jobs computer. im limited!
Foster382 is offline vBGarage Page   Reply With Quote
Old 10-27-2011, 02:13 PM   #20
Supreme Member
 
58mark's Avatar
 
Join Date: Jan 2009
Location: Mesquite, Texas
Posts: 3,915
Car: 89 rs, 86 Trans Am
Engine: RS-V6... Trans Am-LG4
Transmission: RS-T5... Trans Am 700r4

Classifieds Rating: (3)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

Its one of those cassette adapters that needs a working deck for it to work
58mark is offline vBGarage Page   Reply With Quote
Old 10-27-2011, 02:26 PM   #21
Junior Member
 
Join Date: Oct 2011
Location: NJ
Posts: 8
Car: Still dreaming

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

For some people it could work, just a suggestion
Octane is offline vBGarage Page   Reply With Quote
Old 11-13-2011, 02:29 PM   #22
Senior Member
 
Join Date: Feb 2009
Location: La Grange Park, IL
Posts: 972
Car: 1987 Iroc Z28/ 1982 Z28
Engine: 355 TPI IP/ 305 CFI
Transmission: T-56/ 300C
Axle/Gears: 3.42 Open/ 3.73 Posi

Classifieds Rating: (1)
Send a message via AIM to Chevy8588
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

ive owned 4 third gens, a 95 cadillac with the delco unit, and an old cavalier. ALL of my tape decks worked perfect. my girl friend owns 2 camaros and had a firebird, al of her tape decks worked
Chevy8588 is offline vBGarage Page   Reply With Quote
Old 11-26-2011, 09:50 PM   #23
Junior Member
 
dcil's Avatar
 
Join Date: Nov 2011
Posts: 52

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

Could use the switching jack to trigger a micro relay to bridge the brown and red wires.
dcil is offline vBGarage Page   Reply With Quote
Old 11-26-2011, 09:54 PM   #24
Junior Member
 
dcil's Avatar
 
Join Date: Nov 2011
Posts: 52

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

Looks like I have a project to play with next week. Probably take the complete tape section out, make an abs plate to cover the hole and mount the jack. Heck, may just gut a cell phone charger and add a usb charge port.
dcil is offline vBGarage Page   Reply With Quote
Old 11-27-2011, 03:39 PM   #25
Member
 
Foster382's Avatar
 
Join Date: Jan 2010
Location: Pasadena, TX
Posts: 303
Car: 1991 Formula
Engine: 350TBI
Transmission: 700r4
Axle/Gears: 2.73

Classifieds Rating: (0)
Re: How to add an auxiliary input on an original Delco unit ? SOLVED WITH DIAGRAM !

Quote:
Originally Posted by dcil View Post
Looks like I have a project to play with next week. Probably take the complete tape section out, make an abs plate to cover the hole and mount the jack. Heck, may just gut a cell phone charger and add a usb charge port.

i just did that actually, i added a dual usb port on the plastice above my ac controlls.
sense i work at raadio shack, i took apart a 1.2 amp usb car charger, wired up a fuse amd did some plactic cutting,
Foster382 is offline vBGarage Page   Reply With Quote
Old 11-27-2011, 03:39 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Car Audio

Tags
35mm, 88, adapter, add, aux, auxiliary, camaro, cassette, dash, delco, hard, input, line, mod, radio, replace, sound, system
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 12:41 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details