The simple color-coded ground wire makes installation easier by indicating which cable goes where on the connector. A polarity mistake could seriously harm your audio equipment. Included in the package is 1xRed, 1xOrange, 1xYellow, 1xGreen, 1xBlue, 1xPurple, 1xBrown, 1xBlack, 1xGray and 1xWhite in the form of electrical wiring.