This Amplifier Interface Harness for select 1997 to 2004 Chevrolet vehicles allows you to install an aftermarket car stereo and retain the Retained Accessory Power function where power is supplied to the radio after the ignition is shut off until one of the doors are opened Harness will also retain the amplified door woofers through the use of a differential line converter. This helps eliminate turn on
off pops and allows the user to adjust the level of the door woofers. This product ships in approximately 1 days