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Registered
Join Date: Mar 2002
Location: New Hartford, NY
Posts: 740
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external tach hookup
Hi, need to set my idle speed, then set my timing. I was reading the directions on the small hand held engine analyzer/ tach, red clip to negitive terminal of coil and black clip to ground. Just wondering if this correct for Porche cars also. I have a 77 911S with a 3.0L SC motor. Thanks Jerry
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