Be it a CIC or NBT head unit, in order to take it out you would need to: 1. disconnect the negative battery terminal in your trunk; 2. remove the top and bottom pieces of the trim taking into account all the connections behind them (it’s always better to use professional trim tools not to break any clips or leave scratches); 3. remove the faceplate (secured by screws); 4. unscrew the T20s that hold the head unit and gently pull it out; 5. carefully remove all the connections in the back of the head unit