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Would it be possible to install a secondary car stereo along with the factory unit?
I have a factory unit in my mazda but its tied into the in dash navagation system. So I cannot swap out. There is no jack to plug in my iPod. (no casste.either) I have tried many fm transmitters (all poor & unacceptable) can I get a head unit and stick of in the glove comp , wire it up to the existing speakers, and not interfere with the stock unit.
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