10-Pin Harness - Sniper TBI

The Holley 10-Pin Harness for Sniper TBI is a precision EFI wiring harness engineered as an input/output interface for Holley Sniper EFI fuel injection systems. This harness serves as the critical communications backbone between the Sniper EFI ECU and engine sensors, injectors, ignition systems, and auxiliary components. Designed for street, strip, and off-road applications where modern fuel management is retrofitted to carbureted or traditionally aspirated platforms, this harness delivers the signal integrity and connector reliability required for consistent closed-loop operation.

The 10-pin configuration accommodates the sensor and actuator connections typical of Sniper EFI installations, where oxygen sensors, fuel pressure transducers, temperature inputs, and injector outputs must be routed from the engine bay to the ECU with minimal signal loss or noise. The harness is manufactured to OEM connector standards with properly gauged conductors to ensure voltage stability across all sensor readings. At 0.58 lbs with compact dimensions (6 x 4.2 x 6.5 inches), this harness integrates cleanly into engine bays of varying sizes without requiring extensive rerouting of existing wiring or enclosure modifications. Proper installation of this harness directly affects fuel mixture accuracy, idle stability, and cold-start performance.

This harness is intended for builders, tuners, and enthusiasts converting classic or performance engines to Holley Sniper EFI management. It is essential for anyone completing a Sniper TBI fuel injection retrofit, whether for a muscle car, hot rod, marine engine, or light-duty truck application. The harness simplifies the integration process by providing pre-terminated connections that match Sniper ECU pinouts, eliminating the need for custom splicing and reducing installation labor. Buyers should verify compatibility with their specific Sniper EFI unit version before ordering.