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#1 |
Registered User
Join Date: Mar 2014
Location: Angier,North Carolina
Posts: 33
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Blue radio wire?
Hi folk's. I picked up an original am/fm delco radio yesterday. I pulled it out of a 1971 pickup with no windshield. Knobs are a little rusted but do turn. The slider moves but the display does not change. Does it need power for that to work? Also from what I found online the yellow wire off the back is to power. The black/green and green go to speaker. It has a blue wire that comes off from the right side dial. I have no clue what it goes to. I want to put power to it see if it works. Thanks for any help. Russ
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#2 |
Registered User
![]() Join Date: Sep 2007
Location: Rufus Oregon
Posts: 1,187
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Re: Blue radio wire?
Do you have any pictures of it? Are you sure it is a pickup radio? That wire might be for a rear speaker from a passenger car. Slider does not need power. Sounds like it has rust inside the radio keeping it from moving. This kind of sounds like a passenger car radio, that come with a rear speaker fader knob.
__________________
1971 Cheyenne Super C-20 402 4 speed 1970 El Camino L-48 350 1999 Chevy Z-71 Extended Cab 4x4 2000 Tahoe Z-71 2004 Monte Carlo S.S. Supercharged Dale Earnhardt Intimidator 1970 Chevelle, Malibu Sport Coupe 2007 Harley-Davidson FLHX Street Glide |
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#3 |
Registered User
Join Date: Mar 2014
Location: Angier,North Carolina
Posts: 33
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Re: Blue radio wire?
Here a pictures.
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#4 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Blue radio wire?
Do you have a pic of the face?
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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#5 |
Registered User
Join Date: Mar 2014
Location: Angier,North Carolina
Posts: 33
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Re: Blue radio wire?
Here's the front.
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#6 |
Senior Member
![]() Join Date: May 2010
Location: Wisconsin & Arizona
Posts: 4,844
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Re: Blue radio wire?
I agree that the blue wire is probably for a rear speaker. I have a van AM/FM that I modified to look like an original truck radio. It has the blue rear speaker wire. I mounted the van 6X9 rear speaker in a spare factory console with the speaker pointing out an opening in the back. Certainly doesn't sound like a modern stereo system, but the sound is much better. Not all van radios had this provision. I have another van radio without the blue wire.
Pictured below for reference are the unmodified van radio, the modified van radio and speaker mounting. |
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#7 |
Registered User
Join Date: Mar 2014
Location: Angier,North Carolina
Posts: 33
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Re: Blue radio wire?
Thank you for the help. Russ
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