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#6
02-13-2026, 03:16 PM
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I guess I should have asked 1st how is the tach supposed to be wired?
Does it need 12 volts to make the tach work? Don't know what Hyperspark is. Stock just uses a wire to coil and a ground wire. A 12 volt source is just used for the light. (usually for nighttime) 3 wires total. (unless housing is the ground then just 2) Also what car and year? 
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