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SW Tach "wandering needle"
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09-24-2009, 03:10 PM
ZOERA-SC7XX
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Join Date: Mar 2005
Location: Meriden, CT
Cobra Make, Engine: ERA 427 SC s/n 718, 428 FE
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You must ground it to a dedicated ground wire on the harness, not just bare metal. That did the trick for me.
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