Axxess AX-ADGM03 ADBOX Aftermarket Stereo Installation Harness for Select 2000-Up GM Vehicles Axxess ADBOX Aftermarket Stereo Installation Harness for select 2000-UP GM Vehicles Harness is used when installing an aftermarket stereo Connects the aftermarket stereo harness to the vehicles factory harness Plugs into the factory harness without cutting any wires Made from OEM quality materials