General Motors 2006-up LAN Accessory and NAV Output Interface. This interface will Provide accessory power (12-volt 10-amp) and Retain R.A.P. (Retained Accessory Power) for an aftermarket radio that is lost when the OEM radio is removed. It will also provide navigation outputs (reverse/parking brake/vehicle speed sense). Harness is prewired for the ASWC-1 (ASWC-1 sold separately) which retains the OEM steering wheel controls (Aftermarket radio must be SWC capable). Used in non-amplified systems or when replacing amplified systems.