Pioneer TS D690R wiring help! + and -

[volsrock 10+ year member]

I just got these from Ebay they are the Yellow Pioneer 6x9s

Anyway I don't see a + or - on the speakers

which side is + and which is -

One prong is fat and the other smaller

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[Mexar 10+ year member]

I know for a fact, I've wired them both ways, as long as you get 'em the same, I couldn't tell a difference.

I do know, that in the electrical trade, the fat prong is always the IC, Neutral, or Negative in this case, so that's what I typically went by

 

[volsrock 10+ year member]

Think I found the answer

How do I tell which is positive and negative on my new speakers?
There are several different methods that manufacturers might use to indicate speaker terminal polarity:

* On most full range speakers, two different size terminals are provided. The larger terminal indicates positive, the smaller terminal is negative.

http://www.crutchfield.com/S-03IxGdAdBLl/tech/kb21.html