Question about Pioneer GM-D7400M Car Audio Amplifier
If this is new out of box make sure you have 12volts to the amp turn on wire. You should have constant 12volt + to the battery terminal 12volt- to the ground and 12volt + from the head unit (radio) to the amp The turn on wire on most car stereos is a thin blue wire. run this wire to the amp's terminal and when you turn on the radio the amp should turn on.
Posted on Sep 30, 2010
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Posted on Jan 02, 2017
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