The right-front speaker wires are gray, left-front speakers are white, right-rear speakers are purple, and left-rear speakers are green. Ground wires are black, antenna wires are blue, and amplifier wires are blue with a white stripe.
What color is the positive wire on a car stereo?
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What color is the ignition wire for stereo?
and run positions and voltage should come back. This is the correct wire for Ignition/Accessory (red wire).