Gmc Terrain Radio Wiring Diagram. • connect the white/black wire to the left front negative speaker output. 6 1/2′ doors left front speaker wire (+):

When you make use of your finger or perhaps the actual circuit with your eyes, it is easy to mistrace the circuit. • connect the green/black wire to the left rear negative speaker output. If you read it carefully it covers multiple levels of audio system packages and has all of the wire colors and details of the signal passing thru them.