Chevy Cobalt OE Wiring Harnesses & Stereo Adapters — CARiD We have you covered with top-notch wiring harnesses designed precisely for your Chevy Cobalt by the most trustworthy brands in the industry. Chevy Cobalt wire harnesses showcased on our digital shelves provide efficient, worry-free operation of many parts of the vehicle. Also, it makes installation a breeze. 2010 Chevy Cobalt OE Wiring Harnesses & Stereo Adapters Chevy Cobalt 2010, Factory Replacement Wiring Harness by Metra®, with OEM Radio Plug. For factory stereo. This high-quality Metra wiring harness is just what you need to replace your defective or aged factory wiring harness.