Name: HOLLEY LS Standalone Harness | PSI
Brand: PSI Conversion
SKU: HAR-HOLLEY
Price: 649 USD
Availability: InStock

The PSI Conversion Holley Harness was designed to provide customers with a much more efficient, higher quality harness to simplify installation. PSI Holley Harnesses are built in house in the USA with GM spec high temp cross-linked polyethylene TXL wire. Terminals and connectors meet or exceed OEM specifications from Delphi/Aptiv, Yazaki, Kostal etc. All harnesses are 100% quality tested using Dynalab or Cirrus harness testing equipment.

ADDITIONAL ITEMS REQUIRED: HOLLEY Terminator X or Terminator X MAX ECU

APPLICATION: The PSI HAR-HOLLEY harness can be ordered for any 24x (Gen 3) or 58x (Gen 4) LS & vortec engines (1997-2015+), drive by cable or drive by wire throttle control, and 4L60 (1996+), 4L80 (1993+), or non-electronic and manual transmission applications.

NOTE: Terminator X MAX is required for drive by wire throttle control and/or 4L60/4L80 transmission control.

The Terminator X ECU features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Terminator X comes fully loaded with base maps for common LS engine combinations to get you out of the garage and on the road/track fast.

When to use a Holley ECU over a factory GM ECU?

Holley computers are recommended for use in race car applications where tuning may be updated or changed frequently for different race applications or tracks as well as frequent drivetrain changes.

Does a Holley ECU require custom tuning?

All Holley computers must be set up with the Holley setup wizard to base map the tune on your engine. This can be done on the 3.5in Holley LCD screen or on a laptop. This base map is a self learning/adjusting tune that will get your engine fired up and running, however a custom tune from a professional tuner is always recommended for built engine applications to optimize performance.

PARTS INCLUDED: Complete engine and transmission Harness, Instruction Manual

CONNECTIONS FOR:

Fuse/Relay Box
Fuel Pump Control (Relay included)
IAC and TPS on DBC setups
Throttle body and Pedal on DBW setups
IAT Sensor
Oil Pressure Sensor
Wideband O2 Sensor
MAP Sensor
Engine Coolant Temp Sensor
Alternator Control
Crankshaft Position
Camshaft Position
Fuel Injectors
Coil Packs
Automatic or Manual Transmission control
Knock Sensors

Connections from the Harness You Will Need to Hookup:

Fuel Pump (Required)
Switched Ignition Power (Required)
Constant Power (Starter 12v Stud)

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Looking for an Affordable, In Stock, Plug and Play wiring harness for your LS Swap? PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. All PSI Harnesses are Made in the USA and are 100% Computer Quality Tested. In addition to wiring harnesses, PSI carries Holley Products, Vintage Air A/C, Dakota Digital Gauges, HPTuners and PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion!

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HOLLEY LS Standalone Harness | PSI

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