rdd225566 8/25/2010

1987 GMC R1500 Sierra Classic 8Cyl5.0L - Body & Interior

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how do you hook up under dash voltmeter gauge

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  Bobby 8/25/2010

  if it is an aftermarket gauge it should come with an installation guide or contact the manufacturer for one. but typically you have to hook a wire up to the alternator wires and run it into the cabin and mount the gauage. as to which wires again i would contact the manufacturer of the gauge

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