Which wire is the + and which one is the - ? The one with the stripe or the one without?

jon

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I'm the original owner of a white ' 84 2M4 purchased Dec 10, 1983 from Pontiac. Always garaged, no rust, 4-wheel drifts are fun! 3800 SC swap to come!

That's aftermarket speaker wiring, go back a bit further to the colored wires.

This thread: https://www.fiero.nl/forum/A...090219-2-085258.html tells me the color of the Fiero wires in my car - and i have the schematic as well if my 84 is wired differently than others (it usually is). But my question is which wires are the + and the - of the aftermarket speaker? So i can wire it up.

jon

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I'm the original owner of a white ' 84 2M4 purchased Dec 10, 1983 from Pontiac. Always garaged, no rust, 4-wheel drifts are fun! 3800 SC swap to come!

How to check speaker polarity:

Thanks RWDPLZ that video explains it well. i finished wiring up my rally gages and installing my oil pressure sender off an 86 GT. Works really good now, so i went ahead and pulled the radio out of my S10 and put it into my Fiero. Now i have a good radio in my Fiero and the right speaker just buzzes, probably because of just wrapping my wires together with electrical tape. i've gotten better with soldering so now i'm gonna solder them and use shrink tubing, so hopefully that will fix the problem. Now for a really dumb question, i assume that i wire the + of the speaker to the + of the car wiring. No?

thanks again
jon

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I'm the original owner of a white ' 84 2M4 purchased Dec 10, 1983 from Pontiac. Always garaged, no rust, 4-wheel drifts are fun! 3800 SC swap to come!

Yep!

All aftermarket speakers I've ever used had a large and a small terminal. The larger one was the positive and the smaller one was the negative.

These harnesses make it plug and play if you haven't cut your factory wiring harness plugs.

https://www.crutchfield.com...rnesses.html?tp=3097

Checking the actual polarity is safer than assuming the Chinese factory's quality department got it right

Yep! I probably got lucky. That makes twice in my lifetime.

I'm a little late to the party, but the stripe generally goes on the ground (-) wire. Plus, as mentioned above, the smaller terminal on the speaker is usually the ground.

[This message has been edited by Blacktree (edited 07-13-2018).]

As long as all the speakers are wired the same, they will be in phase and polarity won't matter.

^^ That is also true.

Speakers are not polarity sensitive, i.e. you don't have to hook up the positive wire to the (+) terminal. However, they do need to be all hooked up the same way. If some are hooked up backward from the others, it will ruin the sound quality.

[This message has been edited by Blacktree (edited 07-13-2018).]

Even if all speakers are wired in phase, but backwards, sound quality will suffer if the speaker uses some type of crossover circuit.

what i did was just put a multimeter on it at the OEM connector since those colors are documented, then i checked continuity
to sort out which was what. now my speakers weren't labeled positive or negative just a bigger tab and a smaller tab..

quote Originally posted by olejoedad: Even if all speakers are wired in phase, but backwards, sound quality will suffer if the speaker uses some type of crossover circuit.

All the crossovers I've used and seen are passive and use non polarized components so it still wouldn't matter. The signal going to the speakers are A/C so polarity won't matter as long as all the speaker components and crossovers are wired in phase the same way.