Sniper-2 tp Sniper-1 Adapter Wire Harness

The Sniper-2 to Sniper-1 Adapter Wire Harness (MPN 558-489) bridges two generations of Holley's acclaimed fuel injection control platforms, enabling seamless integration when upgrading or retrofitting EFI systems on performance and street vehicles. Built for engine builders and technicians who demand plug-and-play compatibility without custom wiring, this adapter harness eliminates the need for expensive full rewiring when migrating between Sniper ECU platforms. Whether you're upgrading a carburetor-to-EFI conversion or transitioning between Sniper generations, this harness provides the critical electrical pathway your engine management system requires.

Engineered by Holley to OEM specifications, the Sniper-2 to Sniper-1 Adapter Wire Harness features precision-terminated connectors that ensure clean, reliable signal transmission between your ECU and fuel injectors, ignition timing sensors, and auxiliary components. The harness is constructed with automotive-grade shielded wiring to minimize electromagnetic interference—critical when running tight engine bays or high-output ignition systems. Compact dimensions (6.45 x 3.3 x 6.65 inches) and lightweight design (0.54 lbs) allow for easy routing through stock or custom firewall pass-throughs, maintaining factory-like installation cleanliness while preserving full diagnostic and tuning capability across both platforms.

This adapter harness is essential for hot rod builders, race engine developers, and street machine enthusiasts running Holley's Sniper EFI systems who need cross-platform compatibility without fabrication headaches. Technicians performing mid-project platform changes, or shops standardizing on newer Sniper-1 architecture while supporting legacy Sniper-2 installations, will appreciate the time savings and eliminates risk of miswired connectors. Installation requires basic mechanical knowledge and integration with your existing fuel system, ignition wiring, and battery ground—no cutting or splicing required when used with matched Sniper components.