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First of all you will need to snip the factory connector off near the speaker(s) you intend to replace. Then it is a matter of trial and error to get the correct polarity. If the polarity is reversed, you will still get sound out of the speaker, however, the tone coming out of the speaker will be higher (little to no bass). If that happens, reverse the wires and mount the speakers.

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βˆ™ 2015-07-15 21:24:03
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Q: How do you connect new 6x9 rear speakers to the factory wiring in a 1990 Mercury Topaz?
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