A good ground connection is vital for proper stereo performance and to eliminate unwanted noise. If you are not using a custom wiring harness, look for a bare, unpainted bolt or screw that contacts the bare metal of your vehicle's chassis. Loosen the bolt, slip the ground wire underneath (this is almost always a black wire), then tighten the bolt. If your ground wire doesn't contact bare metal, your stereo won't operate. A loose or weak ground connection can result in signal noise interfering with your music.
Car stereos have eight wires for the traditional 4-speaker system – a positive wire and a negative wire for the front left, front right, rear left, and rear right speakers. Depending on the wiring configuration in your vehicle and the wiring harness adapter we offer, some of these may not be used.
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