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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: BBM3 on January 29, 2016, 04:48:00 pm

Title: Delco Radio Speaker/Power Pinout
Post by: BBM3 on January 29, 2016, 04:48:00 pm
I have been unable to find connectors or more importantly the pinout for the Delco AM radio pictured below.
I don't really need connectors I have no problem slinging solder.

Thanks for looking.

(http://www.bnkk.net/k10/am1.JPG)


(http://www.bnkk.net/k10/am2.JPG)


(http://www.bnkk.net/k10/am3.JPG)


(http://www.bnkk.net/k10/am4.JPG)
Title: Re: Delco Radio Speaker/Power Pinout
Post by: zieg85 on January 29, 2016, 04:56:08 pm
77 and older GM cars have those plug ins.  Ebay has them as well. 
Title: Re: Delco Radio Speaker/Power Pinout
Post by: BBM3 on January 29, 2016, 05:02:41 pm
77 and older GM cars have those plug ins.  Ebay has them as well.

Thanks,
All I have been able to find on Ebay etc. are the rectangular blue, white, and black connectors which I am familiar with.
What I really need is the pinout for this radio.
Title: Re: Delco Radio Speaker/Power Pinout
Post by: zieg85 on January 29, 2016, 05:04:39 pm
this is a picture of the back of a AM 8-track stereo...  Rotate the plugs on the standard AM and you get the gist of it.
Title: Re: Delco Radio Speaker/Power Pinout
Post by: hatzie on January 29, 2016, 05:07:13 pm
The pin-out for the radio will be in the factory wiring diagrams.  Look in my signature...
Title: Re: Delco Radio Speaker/Power Pinout
Post by: BBM3 on January 29, 2016, 05:13:04 pm
The pin-out for the radio will be in the factory wiring diagrams.  Look in my signature...

Thanks I hoped you would chime in.
I did download your service manual a couple of weeks ago.
I must have missed what I am looking for.

I'll read again.

Thank you!
Title: Re: Delco Radio Speaker/Power Pinout
Post by: BBM3 on January 29, 2016, 05:14:22 pm
this is a picture of the back of a AM 8-track stereo...  Rotate the plugs on the standard AM and you get the gist of it.

Thanks that picture solves the power, ground, and backlight part.
Title: Re: Delco Radio Speaker/Power Pinout
Post by: hatzie on January 29, 2016, 05:34:33 pm
The pin-out for the radio will be in the factory wiring diagrams.  Look in my signature...

Thanks I hoped you would chime in.
I did download your service manual a couple of weeks ago.
I must have missed what I am looking for.

I'll read again.

Thank you!

You need the wiring manual.  It's separate from the service manual.  If you snag em from my Mediafire bucket I have sub-folders for each year.
There are actually 3 or 4 manuals to make a set depending on the year.  1 Service, 2 Unit-Repair, 3 Wiring, and 4 Emissions/Driveability manuals. 

The radio wiring will be toward the end of the wiring manual in the optional equipment sub-harness diagrams not on the base model overview wiring pages.

The actual connector family is Delphi Pak-Con.  Not sure if it's Pak Con I, II or, III.  Delphi still sells the terminals so you can buy em from Del-City etc but not these radio connector shells.  You can evilbay all of the 70's radio connectors with pigtails.
Title: Re: Delco Radio Speaker/Power Pinout
Post by: BBM3 on January 29, 2016, 05:52:46 pm
I have the wiring manual as well.
I see the three pin power connector but not the speaker connectors.

I don't want to waste your time. I'll look further and figure it out. I'm sure it is all there.
If all else fails I can take the chassis apart and use the schematics in your radio service manual.


Thanks for sharing!

EDIT:
I am not sure if the Delco radio I have came from a 1975 truck.
It may well have come form an older GM vehicle?
Additionally, a previous owner cut the original radio wiring, dash, IP trim, and installed a single DIN no name Chinese POS radio.  >:(
I have a new IP trim panel and I am making a steel patch panel to fill the DIN hack job and allow me to install a period correct Delco two shaft radio.
Title: Re: Delco Radio Speaker/Power Pinout
Post by: hatzie on January 30, 2016, 06:24:10 am
Try the upper left corner of page 10.
Title: Re: Delco Radio Speaker/Power Pinout
Post by: BBM3 on January 31, 2016, 02:38:55 pm
Try the upper left corner of page 10.

Exactly what I was looking for.

Thank you very much!