When replacing your factory radio with an after-market car stereo the Scosche CR04B 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 Scosche CR04B you would have to cut the OE radio plug and manually test each wire to connect to your after-market receiver. Always providing you with the best selection and the best value. Satisfaction ensured.- SKU: PESISCR04B