The 12V battery wire is yellow, the accessory wire is red, and the dimmer/illumination wire is orange with a white stripe. The right-front speaker wires are gray, left-front speakers are white, right-rear speakers are purple, and left-rear speakers are green.
Is red or yellow wire constant?
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Yellow wire 12 volts constant. Red wire 12 volts ignition/accessory. Black wire ground.