This Metra AXXESS vehicle-specific data interface is designed for use when installing an aftermarket radio in select 2001–2002 Oldsmobile Aurora vehicles. It retains R.A.P. (Retained Accessory Power) and provides 12-volt 10-amp accessory power along with NAV output signals for parking brake, reverse, and speed sense. This interface is designed for non-amplified systems or for bypassing a factory amplifier and retains all factory warning chimes through an onboard speaker.