Plugs into car harness at radio, Power/4 Speaker, 16-Pin connector, Allows for the installation of an aftermarket radio using the existing factory wiring and connectors, No cutting of factory wiring needed, Check the Product Instructions to see basic instructions and compatibility list for the Metra 70-1784, Connections:, Yellow: 12V Constant, Red: 12V Accessory, Black: Ground, Orange: Dash Light Dimmer/Illumination, Green: Left Rear Speaker (+), Green with Black Stripe: Left Rear Speaker (-), White: Left Front Speaker (+), White with Black Stripe: Left Front Speaker (-), Purple: Right Rear Speaker (+), Purple with Black Stripe: Right Rear Speaker (-), Gray: Right Front Speaker (+), Gray with Black Stripe: Right Front Speaker (-), SKU: DBL5778