Easily add an aftermarket amplifier to your vehicle’s factory audio system with this Amplifier Integration Interface for Select GM Vehicles by PAC. The AOEM-GM1416 provides a 4-channel RCA audio output so you can install an aftermarket amplifier while retaining your vehicle’s factory radio or add an amplifier to an upgraded aftermarket radio. This amplifier integration interface also features a vehicle-specific harness that plugs directly into the vehicle’s wiring for quick installation. | Pac | | Amplifier Integration Interface for Select GM Vehicles | Blue | Best Buy