AXDIS-GM13 METRACadillac STS Onstar Data Interface Harness w/ SWC 2005-2011 This vehicle-specific interface is designed for use when installing an aftermarket radio. It features simple installation and retains OnStar® functionality, chimes, balance and fade, and R.A.P. (retained accessory power). It also provides NAV outputs, including parking brake, reverse, speed sense, and 12-volt 10-amp accessory power.Designed for amplified modelsProvides accessory power (12-volt 10-amp)Retains R.A.P. (retained accessory power)Provides NAV outputs (parking brake, reverse, speed sense)Retains audio controls on the steering wheelRetains OnStar®Retains balance and fadeMicro-B USB updatable ApplicationsCadillacSTS 2005-2011