Engine Control Module (ECM) Wiring Harness

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Regular price
$35.49
Regular price
$39.43
Sale price
$35.49

Vendor : Holley EFI

Product Type : Engine Control Module (ECM) Wiring Harness

Sku : GVMR_558-420

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PN 558-420 contains 5 extra input/output wires that the base Terminator EFI harness does not contain. It contains Input wires for Inputs 1-4. It contains one wire for Output 2. These inputs and outputs can perform features and functions that must be programmed via Holley EFI laptop software. The software also contains instructions on how to program these.
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