Adding an AUX input to your Delco Stereo

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Adding an AUX input to your Delco Stereo

Post by Someone » Wed Sep 13, 2006 8:01 pm

Delco Aux Plug (Finally!)

This is a diagram explaining the wiring to the remote-mounted AUX cassette or CD in many late-model GM vehicles...

You can use this input to feed the radio a signal from other outside AUX sources, such as MP3, mobile video, cellular, etc. You just need a couple relays!

This post will include the basic pinout for the plugs.

The diagrams below show the position of the wiring, here are the colors:

A - Blue >> ACC w/30-second turn-off delay
B - Gray >> Dimmer 12v-0v
C - Bare w/sleeve >> Grounded Signal Shield
D - Green >> Right Signal
E - Orange/Black >> Left Signal
F - Tan >> Audio Common (Thanks Jeff!)
G - Black >> Chassis Ground
H - Green >> Data Bus
J - Orange >> Constant 12v

Please note that there are two green wires. They are not interchangable!


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Post by k120189 » Sat Nov 03, 2007 9:29 pm

i hate to bring this up cause its old...but someone would u care to draw up a schematic? i was interested in putting an input for my guitar into my dash to use my van as one big amp like the new VW..and to add a stereo jack for the usual ipod hook up
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Re: Adding an AUX input to your Delco Stereo

Post by midnighthunder89 » Tue May 12, 2009 1:20 am

Hello,
This is the only post i can find dealing with adding an aux input for an ipod to a stock headunit. Has anyone done this mod? Can anyone display a diagram of what is needed and how to wire it up?
Thanks
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Re: Adding an AUX input to your Delco Stereo

Post by LaGrasta » Tue May 12, 2009 2:27 pm

great post and diagram, thanks.

For me, as I had an aftermarket head unit, I used the RCA jacks for the remote CD changer. I bought a RCA jack to iPOD dock cable and it works great.
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Re: Adding an AUX input to your Delco Stereo

Post by madslammer » Sun Jul 04, 2010 3:19 pm

Are the diagrams the ones for the plugs?
How about the relays you mention?
Just got a little lost when you mentioned the relays. . . 8-[
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Re: Adding an AUX input to your Delco Stereo

Post by maing bus » Wed Oct 12, 2011 2:18 pm

anybody else had luck with creating this plug in?
I want to replace that slug bug thing with Maing bus!

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Re: Adding an AUX input to your Delco Stereo

Post by justice » Wed Oct 12, 2011 2:27 pm

there are people on eBay that are selling modded factory radios for the Astros that do not have the theaft lock and have the AUX input already installed. If you get one from them its just plug and play to install it in place of your factory unit.

I was going to get one from them but i already had an aux capable head unit new in the box sitting at the house so i used it instead.
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Re: Adding an AUX input to your Delco Stereo

Post by Wiley » Wed Dec 28, 2011 9:07 pm

Haha, how does this work if we want to do it ourselves, I dont think its been answered. Thanks
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Re: Adding an AUX input to your Delco Stereo

Post by astroturf » Wed Dec 28, 2011 11:32 pm

Wiley wrote:Haha, how does this work if we want to do it ourselves, I dont think its been answered. Thanks
Why sure it has...

This is a STICKY isn't it?

Oh Oh, Sorry, I just read thru this sTICKY, Not too sticky is it?

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Re: Adding an AUX input to your Delco Stereo

Post by astroturf » Thu Dec 29, 2011 4:42 am

Let's give this sticky SOME STICK...

Click Here: http://db.tt/cXYRpOUp It's in my Dropbox.

It is a complete? wiring diagram for an 03 Astro Van. Don't think much of the basic stuff (radio) has changed.

Good Luck and use at your own risk. Note: File size is 6.75 mb

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Re: Adding an AUX input to your Delco Stereo

Post by Bret Schmerker » Thu Dec 26, 2019 7:16 am

:whistle: What GM Part Number the nine-pin shell? I am currently considering three flavors of 1 Factory Radio Cat. No. 638.01007C AM/FM/Compact-Cassette receivers with Dolby Laboratories Noise Reduction Type B (all professional remanufactures of General Motors P/N 15757047 as used in the 1996-2005 Chevrolet Astro LS/LT and GMC Safari SLE/SLT/SLZ with Deluxe AM/FM/Cassette Receiver and Eight Speakers, RPO UL0) as upgrades from my current (as of December 2019) General Motors P/N 16180215 (as used in the 1996-2005 Chevrolet Astro base and LS and GMC Safari base and LE with AM/FM/Cassette Receiver and Six Speakers, RPO UM6). I've partially deciphered the Circuit Numbers as an aid:

A: 43 - 1.0 LBL >> +Vcc Radio ("HOT IN ACC OR RUN")
B: 8 - 0.5 GY >> Illumination
C: 150 - bare braided Cu >> Signal Shields
D: ??? - 0.8 DGN >> RT Audio, Line-Level
E: ??? - 0.8 OR/BK >> LT Audio, Line-Level
F: ??? - 1.2 TN >> Audio Common
G: 150 - 1.6 BK >> -Vss Power Common
H: ??? - 0.5 LGN >> Data Bus
J: 340 - 0.8 OR >> +Vcc Memory ("HOT AT ALL TIMES")
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Re: Adding an AUX input to your Delco Stereo

Post by Mmusicman » Wed Jan 01, 2020 11:23 pm

Save yourself a lot of trouble!
Bluetooth FM Transmitter... ONLY $14!

I've bought 3 of these things already.. they work great!
Clear, powerful, amazing CD quality sound.

https://www.amazon.com/gp/product/B07LB ... UTF8&psc=1

PS: There are MANY to choose from.. but many of the similar models have issues.
This one highly rated and works!

PSS: This has an aux jack too, as well as plays USB and micro SD sticks
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