Holley EFI 558-115 Gen III Hemi Main Harness, Early

This wiring harness interfaces a Holley EFI ECU to a Gen III HEMI engine with an aftermarket cable actuated throttle body. It is meant to be used in conjunction with an injector harness, a coil harness, and two ignition modules. Most stock sensors are used with this harness. There are two optional connectors for interfacing with CAN-based Holley modules.

Gen III HEMI Main Harness w Throttle Position Sensor & Idle Air Control, For Manual Throttle Body Application

• Gen III Hemi Main Harness with IAC motor wiring/connector and TPS wiring/connector for a manual throttle body application
• Take control of your Gen III HEMI with Holley EFI by controlling fuel and spark. Great for power upgrades and engine swaps.
• Capable of tuning with power adders such as nitrous, superchargers or turbos and compatible with methanol and water injection
• Harnesses are available to connect to a Gen III HEMI engine for the most advanced fuel and timing controls available
• Each Harness is designed in fit and function specifically for the Gen III HEMI engine platform
• All wiring is TXL grade copper wiring with minimal weight, high temp sleeve in a small diameter
• Factory style terminations provide a strong, secure connection
• Connectors are OEM grade for a correct, positive fit
• Each harness is routed through a split-loom braid for protection and great looks

Installation Instructions