Combo kit for aftermarket radio installation in factory radio location. Gunmetal grey color radio kit. Designed specifically for the installation of Double DIN radios. Antenna adapter used to retain radio reception. Important Compatibility Notes: Will require a separate connection of the red 12 volt ignition wire to the new radio wire harness since the factory radio harness doesn't have it. This harness only works with regular factory audio systems- if the factory audio system is premium system like Infinity, Bose, Boston Acoustics, etc. then this harness is not compatible. Wire harness will not work with vehicles that come with a factory external amp. Will not retain factory steering wheel audio controls- extra adapters required. Will not retain some features that go through the radio like warning chimes, OnStar, rear dvd, steering audio controls, etc. Some off brand off-size radios might not fit properly. Requires modification behind the dash to fit new bigger radio. Compatible Vehicles: No Factory External Amp Vehicles: Made for Chevrolet: 2015-2018 Colorado, Made for GMC: 2015-2018 Canyon