Metra 70-1862 TURBOWire Aftermarket Radio Wire Harness for GM 21-Pin to 12-Pin

Metra 70-1862 Radio Harness conversion for GM 21 pin to 12 Pin Metra 70-1862 Radio Harness conversion for GM 21 pin to 12 Pin. Converts 21 pin harness o a 12 pin harness. This is used when Switching to a different style Oem radio. Wiring harness for fast and easy radio installation (24-pin) Plugs into the car's original radio connectors on one side 12pin male connector on other end plugs into GM OEM radio No wire cutting needed for factory radio connectors Provides electrical power to the radio for a four-speaker connection