Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - HEI, Vacuum, and Tach issue
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Old 04-08-2012, 09:36 AM
joe_padavano joe_padavano is offline
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If you are completely certain that the problem is not the tach wire, then the only other connection between the brake pedal and the distributor would be the brake light switch. Applying the brakes causes a slight voltage drop, if the installation of the HEI is marginal from a wiring standpoint or if there's a grounding issue with the tach, then the voltage drop MIGHT be related.
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