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Which wire is positive one with line or one with out, A or B

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Old May 23, 2009 | 01:46 PM
  #1  
clean86's Avatar
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From: Orange County, CA
Car: 1986 Pontiac Firebird
Engine: 2.8L V6
Transmission: Automatic
Which wire is positive one with line or one with out, A or B

Stupid question i know just cant remember (for speakers btw)
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Old May 23, 2009 | 01:53 PM
  #2  
jermdm's Avatar
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From: Erlanger, KY
Car: 1989 Iroc-z
Engine: 350 TPI
Transmission: Auto 700R4
Axle/Gears: 9 bolt - 2.77
Re: Which wire is positive one with line or one with out, A or B

Positive for speakers should be soild color and negative is the one with the stripe.
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Old May 23, 2009 | 06:18 PM
  #3  
V6F1R3BRD's Avatar
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From: N. Virginia
Car: 1988 Firebird - 1998 Z28
Engine: 2.8 - LS1
Re: Which wire is positive one with line or one with out, A or B

My manual says nothing about positive or negative..
Either you can wire it both ways (ill prob get a virtual backhand for saying that..), or you have to take a test light to them..

But as the book says:

Typical base model stereo system

RT front speaker- Light Green
RT front speaker- Dark Green

LT front speaker- Tan
LT front speaker- Gray

LT rear speaker- Brown
LT rear speaker- Yellow

RT rear speaker- Dark Blue
RT rear speaker- Light Blue

When i did mine with new HU and Speakers i just plugged them up without looking at +/- terminals and it works fine. At least for me..

Last edited by V6F1R3BRD; May 23, 2009 at 07:12 PM.
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Old May 24, 2009 | 02:54 AM
  #4  
Civerus's Avatar
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Re: Which wire is positive one with line or one with out, A or B

When you wire speakers the CORRECT way, the cone should fire OUTwards before rebounding back in.

the WRONG way which will/could cause damage to your speakers will make the cone fire INward, causing it to bottom out easier, be much quieter, and could not produce certain notes.

To check it, use a 9v battery, tap the terminals, if the speaker shoots out, that is the correct way, if it goes in, that is the incorrect way.

speakers PROJECT sound, they don't INJECT sound.
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Old May 25, 2009 | 01:29 PM
  #5  
acadburn's Avatar
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From: Grand Forks ND
Car: 1989 Camaro RS
Engine: 305 V8
Transmission: Auto
Re: Which wire is positive one with line or one with out, A or B

OMG.... LOL

ok just so you know speakers have a AC current that runs though them. there for 1 of your wires is switching from both + to - the other wire is a neutral wire much like you would find in your household wiring.....

wiring a speaker backwards will not hurt it UNLESS you have them in a box together ... (think subwoofers) if 1 of the speakers is wired - and the other is wired + the subs will destroy each other.

the only major problem with wiring a speaker backwords is your sound system will sound slightly off. if on one side you have the speaker wired + - and on the other side - + because the speakers are out of polarity .... (it might not even be noticable)

best thing to do is to make sure u wire all the speakers the same way
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Old May 25, 2009 | 01:44 PM
  #6  
clean86's Avatar
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From: Orange County, CA
Car: 1986 Pontiac Firebird
Engine: 2.8L V6
Transmission: Automatic
Re: Which wire is positive one with line or one with out, A or B

LOL thanks guys for dealing with my retarded moment, i got all my speakers in, sounds really good, but a channel messed up on the stock head soo it looks like im ordering a new stereo reciever
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Old May 25, 2009 | 01:45 PM
  #7  
acadburn's Avatar
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From: Grand Forks ND
Car: 1989 Camaro RS
Engine: 305 V8
Transmission: Auto
Re: Which wire is positive one with line or one with out, A or B

i hate it when that crap happens dont they bench test electronics any more?!!!!?
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Old May 25, 2009 | 03:15 PM
  #8  
V6F1R3BRD's Avatar
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From: N. Virginia
Car: 1988 Firebird - 1998 Z28
Engine: 2.8 - LS1
Re: Which wire is positive one with line or one with out, A or B

Originally Posted by acadburn
i hate it when that crap happens dont they bench test electronics any more?!!!!?
lol i know right.. they have machines to put out hundreds in a day but cant test them...
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Old Sep 15, 2016 | 08:46 PM
  #9  
Pat Benhower's Avatar
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Re: Which wire is positive one with line or one with out, A or B

Just installed Polk audio 4x6 plates in the dash of my '89 RS and checked polarity as (a=neg) (b=pos).
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