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Chevrolet
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1981
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Forward Control 5.7L Eng VIN M, Standard Trans
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Repair and Diagnosis (Single Page)
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Engine Performance
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Ignition System
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Distributors & Ignition Systems - DELCO-REMY High Energy Ignition
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Testing
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Electronic Spark Control Testing
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Notes
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Electronic Spark Control Testing: Notes
NOTE:
Electronic Spark Control is used on some Chevrolet and GMC models using the 5.0L VIN H engine.
Fig 1: Wiring Diagram For HEI System with Electronic Spark Control
Courtesy of GENERAL MOTORS COMPANY