CAR Stereo Dash Install MOUNTING KIT Wire Harness for (Select) Cadillac Chevrolet GMC Vehicles This dash kit fits the Industrys STANDARD sized Single DIN Radios ONLY. Off brand and Substandard radios may not fit. CHECK the Manufacturers Specifications of the radio chassis and face size to assure fitment with this kit. SINGLE DIN: Chassis Size: 180mm X 50mm (7.086" X 1.968") Maximum Radio Face Size: 6-3/4" X 1-7/8" On models equipped with OnStar, you will need to connect the Blue/White (REM, Remote turn on) striped wire on the radio, to the Pink wire located in the secondary "OnStar" factory harness. DASH KIT: GM1483B / GM1483 (For for Select 1995-2005 Chevrolet and GMC Trucks) WIRE HARNESS: Metra 70-1858 (For Select 1988-2002 GM Vehicles)When replacing your factory radio with an after-market car stereo, a wire harness is a must for a quick installation. It eliminates cutting your OE radio plug helping to maintain your cars value. After connecting it, your install is simple as the wires will color-match and easily connect to the after-market stereo. Without a wiring harness you will have to cut the factory harness and then test each wire to connect to your radio. RADIO ANTENNA: Metra 40-GM10 (Works with select 1985-up General Motors vehicles). Antenna to Radio Adapter Cable (Used for Am and FM reception when replacing the OEM radio)