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Home >> GMC >> 1986 >> Forward Control 7.4 W, Standard >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - HEI (Federal) >> Wiring Diagrams

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Wiring Diagrams

Fig 1: System Circuit Diagram (Delco-Remy HEI)

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Fig 2: Wiring Diagram (HEI System W/ESC)

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