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4L V8 1979 - 1980 GMC C1500 Suburban 454/7
Port for adding (optional) high pressure safety switch
1979-1986 GMC G1500
Models with Single Exhaust
GM 58X EFI HARNESS KIT - 558-501 Medium Margin 4L V8 1979 - 1980Overview: An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes complete with the main harness, power harness and injector harness to support your primary system! Features: Harness Kit Includes; Main Power Harness, LS2 Main Harness & LSX Injector harness Simple Installation Works with HP or Dominator ECU's
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