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Old Jun 29, 2004 | 11:21 AM
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tachometer wiring

i had a tachometer given to me today. i need to know how to wire it. it is a autometer model 288 it has 3 wires red white and black. any help would be greatly appreciated.
 
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Old Jun 29, 2004 | 01:36 PM
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Red should be power, 12v when ignition is on. Black is ground. White would be spark signal from ignition trigger on coil. No light inside it? Or, possibly, light is always on with 12v.
 
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Old Jun 30, 2004 | 01:35 AM
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or it is a self grounding unit and the other is the light go right to their website and download the manual
 
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