This radio replacement T-harness for select 2017-2020 Subaru is the first solution that requires the Maestro RR2 (i.e. it cannot be used with Maestro RR). It greatly simplifies the installation while retaining the factory vehicle settings menu and factory cameras, including 360-degree top view and multiple angle views. Retains the factory amplifier and lets you set input gain and control the fader wh