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some of the new gm radio's dont have a ACC or IGN power in the radio. you can just pull the lower dash off and tap power in there. if it has a wire behind the radio. it will be right by the power. it will most likely be green or yellow. but under the dash you can use orange or brown. they are ACC and pink is IGN. under the dash they will all be 10 gauge wires coming from the key solenoid. hope this helps.
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