When replacing your factory radio with an after-market car stereo, the NWH-702 wire harness is a must for a quick and clean installation. It eliminates cutting your OE radio plug. After connecting it, your install is simple as the wires will color-match and easily connect to the after-market stereo. Without the NWH-702, you would have to cut the OE radio plug and manually test each wire to connect to your after-market receiver. In addition, because you do not have to cut your OE radio plug off, the NWH-702 allows you to reinstall your factory receiver if necessary. A great example is if you sold your car, but wanted to keep your after-market radio and re-install your factory stereo receiver. Harness is used when installing an aftermarket stereo. Connects the aftermarket stereo harness to the vehicles factory harness. Designed specifically to fit the compatible vehicles. Plugs into the factory harness without cutting any wires. Standard color coded wires provide a consistent and simplified installation. Made from OEM quality materials. 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.