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  3. What is a common ground speaker system?
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  4. What is a common ground speaker system?

What is a common ground speaker system?

A common ground system means the negative (-) speaker wires in your car are connected to a common grounding point on the vehicle chassis, or at another point within the vehicle. RetroSound® radios will NOT work on a common ground system. You will need to run new wires to each speaker or use a floating ground adapter.

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