Yellow wire 12 volts constant. Red wire 12 volts ignition/accessory.
Where do you connect the yellow wire on a car stereo?
Can I connect red and black wires together?
Red and black wires are both hot or line wires and should not be connected together.
What is the yellow wire on radio harness?
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.