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delco radio modifications

A

Adam MacKenzie

Jan 1, 1970
0
Group-

Not sure if there's anyone out there who has any experience with car
radios. Specifically, have a '99 Chevy S-10 with a Delco AM/FM/CD
player installed. There is a 9-pin connector on the back which is used
to interface with either a CD-changer, or a cassette deck. I would
like to use this same interface and take advantage of the input to the
pre-amp and just plug in my MP3 player. Don't wish to try and control
the MP3 player from the radio head unit or anything, would just like to
have a direct-to-preamp connection for the best possible sound quality.

So far, I've been unable to locate even a pin-out for the connector.
Does anyone out there have any experience working on this or a similar
project?

Appreciate the help,

Mac
 
S

Stephen J. Rush

Jan 1, 1970
0
Group-

Not sure if there's anyone out there who has any experience with car
radios. Specifically, have a '99 Chevy S-10 with a Delco AM/FM/CD
player installed. There is a 9-pin connector on the back which is used
to interface with either a CD-changer, or a cassette deck. I would
like to use this same interface and take advantage of the input to the
pre-amp and just plug in my MP3 player. Don't wish to try and control
the MP3 player from the radio head unit or anything, would just like to
have a direct-to-preamp connection for the best possible sound quality.

So far, I've been unable to locate even a pin-out for the connector.
Does anyone out there have any experience working on this or a similar
project?

Have you tried a Chevy dealer? Without a schematic, you could try
measuring the voltages at the plug to find the power pin, then injecting
about half a volt of audio into each other pin until you hear it.
 
Group-

Not sure if there's anyone out there who has any experience with car
radios. Specifically, have a '99 Chevy S-10 with a Delco AM/FM/CD
player installed. There is a 9-pin connector on the back which is used
to interface with either a CD-changer, or a cassette deck. I would
like to use this same interface and take advantage of the input to the
pre-amp and just plug in my MP3 player. Don't wish to try and control
the MP3 player from the radio head unit or anything, would just like to
have a direct-to-preamp connection for the best possible sound quality.

So far, I've been unable to locate even a pin-out for the connector.
Does anyone out there have any experience working on this or a similar
project?

Appreciate the help,

Mac

www.installdr.com
gm-wiring.pdf
 
It happens that [email protected] formulated :


Yeah, I'd already been on that site (and soooo many others).
Unfortunately, that's the main harness supplying power/routing for the
speakers, not the 9-pin one that I'm looking for. Thanks much, though!

I would like to know the same information and don't own any sort of
mulimeter to test the pins. So if you find the pinout post it please.
 
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