Question about Car Audio & Video
If you have an aftermarket radio it will usually be the blue wire with a white strip (that is the amp turn on wire). If you hooking it up to a factory head unit, just test the wires behind the radio when you turn the key the wire should through a (+) and when the key is off it should be negative (-)
Posted on Apr 29, 2010
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Posted on Jan 02, 2017
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