Holley EFI- 558-420 TERMINATOR EFI I/O KIT

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This kit contains 4 extra input wires and 1 extra output wire that the base Terminator EFI harness does not contain. PN 558-420 contains 5 extra input/output wires that the base Te rminator 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. Brand Holley EFI Category Engine Emission Code 5 Grade Type Performance Harness Type Auxiliary Part Type Engine Control Module (ECM) Wiring Harness Product Type Terminator Input / Output Sub Category Wire, Cable and Related Components UPC 090127688519 Part Number 558-420 Show more