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Wiring harness frustration...

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Old Jul 29, 2005 | 06:19 PM
  #1  
Derek The Great's Avatar
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From: Warren, MI
Car: 1989 Firebird Formula
Engine: 305 T.B.I. (Vin tag "E" = LO3)
Transmission: THM-700-R4
Axle/Gears: 10 bolt posi 3.23
Wiring harness frustration...

so lately ive takin up going to scrap yards again only to in the long run waste my time... See i was originally looking for the factory cd player for our cars but have lowered my expectations to the eq tape player. heres my issue. of the radios i do find, thier wiring harnesses differ from mine, they all have three seperate harnesses along with the one for the amp, but mine has the rectangle looking one. now i have been pulling the radios from all types of GMs, so my question is, what GM cars had my style wiring harness?
Thanks, this will save me tons of time at my next venture...
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Old Jul 30, 2005 | 01:55 AM
  #2  
Derek The Great's Avatar
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From: Warren, MI
Car: 1989 Firebird Formula
Engine: 305 T.B.I. (Vin tag "E" = LO3)
Transmission: THM-700-R4
Axle/Gears: 10 bolt posi 3.23
ok i will try to narrow this - what other pontiacs besides birds had the rectangular wiring harness one that looks like this, bear with me here...
|****| ****** |
|*******|****|
the stars represent the number of pins and there are two plastic bars roughly located in the area shown. i hope this helps you guys at least somewhat...
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Old Jul 31, 2005 | 12:39 AM
  #3  
Derek The Great's Avatar
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From: Warren, MI
Car: 1989 Firebird Formula
Engine: 305 T.B.I. (Vin tag "E" = LO3)
Transmission: THM-700-R4
Axle/Gears: 10 bolt posi 3.23
ok.. this isnt goin all to well...
how about this?
Is there a simply way to remove this pins from the wiring harness without damaging the harness or metal pin? because i could just convert my old harness to match this other wacky set up...
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Old Jul 31, 2005 | 01:07 AM
  #4  
ScrapMaker's Avatar
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
how about this....

buy the harness from AutoZone that physically plugs into your radio, and splice some wires...

all you really need is some way to plug the wires into the radio... so what you need to find is a set of male connectors that will allow all of your wires to go into the new radio.

Go to autozone and get the cheap adapter that goes from your
|****| ****** |
|*******|****|

to the bare wires, then find the male connectors that physically connect into your new radio, and match them color-wise.

other than that, I could have sworn that all STANDARD radios have this pin arrangement. You are probably finding cars with performance sound options, since the stock radio doesn't have an EQ nor does it have CD... those are upgrade packages.

get out your soldering iron and heatgun and have a blast.
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Old Jul 31, 2005 | 01:10 AM
  #5  
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Ok this should solve your prob(if they still make them that is).Last time i was in radio shack,that was like a year or so ago,i seen an adapter harness that adapts the older(3--4 wire blocks)harness to the newer(the one you drew out)style harness.And if memory serves i seen them in summit too.

But here is another fix you can use.Buy a universal wire adapter for your car(the same ones they use to put aftermarket headunits in YOUR car(can get at any radio shack) and the next time you pull a stereo out of a boneyard car cut the plugin and enough wire from the harness to wire it to the adapter.Wire the wires from new stereo plugin to the adapter you bought for your car.Listen to it.
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Old Jul 31, 2005 | 01:56 AM
  #6  
Derek The Great's Avatar
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From: Warren, MI
Car: 1989 Firebird Formula
Engine: 305 T.B.I. (Vin tag "E" = LO3)
Transmission: THM-700-R4
Axle/Gears: 10 bolt posi 3.23
so i can find the wiring harness adaptor at autozone? i member early this year i tried to find adaptors for my speakers' harnesses along with the radio's but ended up empty handed because i also planned on dropping in a set of boston 746's to replace those crappy 4x6s that sound like they are made of toilet paper... well i will try this out and yes i cant wait to bust out the ole sodering iron...
and if this doesnt work out i will try the radio shack option...
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Old Jul 31, 2005 | 03:21 AM
  #7  
ScrapMaker's Avatar
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
Originally posted by IROC-Turbo
Ok this should solve your prob(if they still make them that is).Last time i was in radio shack,that was like a year or so ago,i seen an adapter harness that adapts the older(3--4 wire blocks)harness to the newer(the one you drew out)style harness.And if memory serves i seen them in summit too.

But here is another fix you can use.Buy a universal wire adapter for your car(the same ones they use to put aftermarket headunits in YOUR car(can get at any radio shack) and the next time you pull a stereo out of a boneyard car cut the plugin and enough wire from the harness to wire it to the adapter.Wire the wires from new stereo plugin to the adapter you bought for your car.Listen to it.
um... I pretty much just said that.

that aside, I think there is an actual adapter that is female on one side, (for your car's stereo harness,) and male on the other, (to go into the new stereo,) that is adapted for that pin arrangement.
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Old Jul 31, 2005 | 04:34 AM
  #8  
Derek The Great's Avatar
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From: Warren, MI
Car: 1989 Firebird Formula
Engine: 305 T.B.I. (Vin tag "E" = LO3)
Transmission: THM-700-R4
Axle/Gears: 10 bolt posi 3.23
thats nuts... i would have never thought something like that was availible, ill investigate this after i get some sleep... but knowing my luck none of the dam radios will be at the scrap yard when i get there... it seems people want these damn radios just as much as i do ARRRGHH...
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Old Aug 1, 2005 | 11:02 PM
  #9  
IROC-Turbo's Avatar
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Originally posted by ScrapMaker
um... I pretty much just said that.
Yup you did--but look at the times they were posted.I was typing mine and trying to look him up a part number for the adapter at the time you posted yours.

That aside.Next time im by radioshack(which isnt often) ill see if i can get you a part number.
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Old Aug 2, 2005 | 07:14 AM
  #10  
Jim85IROC's Avatar
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
to answer your original question, you can find that style harness in almost any late model GM. In the GTAs, that harness showed up in 88 and newer. In S10s & Jimmies, I think it was 90. Most other GMs switched to that harness in 89.
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Old Aug 2, 2005 | 07:39 PM
  #11  
Derek The Great's Avatar
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From: Warren, MI
Car: 1989 Firebird Formula
Engine: 305 T.B.I. (Vin tag "E" = LO3)
Transmission: THM-700-R4
Axle/Gears: 10 bolt posi 3.23
oh ok that makes sense, i looked in older cadilacs, (the rear speakers are EXTREMELY easy to remove) and other pontiacs because of the color, in the older ones it had that 3 style harness which made me wonder if that was the harness you got for having the upgraded auido package which included that amp, is that correct? what year was it that gm updated the look of the radio because i noticed some looked differnt, like the cd player i pulled from this 94 buick, which didnt work it just sucked to waste time pulling these radios out only to be disapointed.

Last edited by Derek The Great; Aug 2, 2005 at 07:41 PM.
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Old Apr 17, 2010 | 11:45 AM
  #12  
badgerooster's Avatar
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Re: Wiring harness frustration...

I am putting a factory cd with eq and I found the 20+ pin connector wiring pigtail at the junkyard. My question is, there is an extra 6 or 7 flat tab pin connector also on the back. Is that for the eq or is that for something else? The wiring pigtail I picked up had an extra plug too but it was different than mine.

I have a 91 firebird, cd player year is unknown and the pigtail was out of a 4th gen camaro.

What are the best and easiest wiring connectors out there. I got a jc whitney misc set and have some of the straight tube crimp connectors. Is there something better or not?
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Old Apr 17, 2010 | 02:12 PM
  #13  
Al Hasse's Avatar
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Joined: Jun 2005
Posts: 1,800
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From: Bremerton, WA
Car: 1992 RS / 1989 RS
Engine: 3.1L MFI / Vortec 383 TBI
Transmission: T5 / LS-T56
Axle/Gears: 3.42 open / 3.73 Eaton posi
Re: Wiring harness frustration...

Originally Posted by badgerooster
My question is, there is an extra 6 or 7 flat tab pin connector also on the back. Is that for the eq or is that for something else?
That might be a 9 pin connector for an auxiliary or slave unit (tape deck/CD player/CD changer). The Theft-Lock unit I'm using in my 89 RS has that (it's from a 2002 model GMC or Chevy truck). I have a slave tape deck that I was going to use for an aux audio source for satellite radio, but I don't have the harness for it. I ended up going to Peripheral Interface Electronics (PIE) and don't need the slave deck anyway.
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Old Apr 18, 2010 | 08:28 AM
  #14  
badgerooster's Avatar
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Re: Wiring harness frustration...

I hope so. I'm not a wiring dude. Just learning how to use my multimeter. I'm working on a car that had an aftermarket radio and amp in it. I found all the factory wiring but I think the power wire has been disconnected and I'm trying to find the ignigtion wire.

I ran a hot wire to the battery and got the clock to show up and the cd player to accept the cd and eject but no radio yet.

Since this thing is factory, the ignition 12v source should be the only thing that powers up the radio/cd player/equilizer? Right.
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