Chevy Cobalt Kenwood stereo installation 

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One thing about your video's you never have the proper tools for the job.but you are a great micanic

Harness link provide?

Ese cobalt, trae sub y amplificador de agencia? Cómo queda esa coneccion?

Cuántas pulgadas es

What is the chime adapter called?

You need some tools making it hard on yourself. Nut driver set works great