LINK ECU Terminated Engine Harness GM LS Gen 3 Gen 4 For use with Storm & Xtreme

Link Terminated LS Engine Harness – Gen 3 / Gen 4 LS

The Link Terminated LS Engine Harness is a ready-made wiring solution for connecting a Link StormX or XtremeX ECU to supported GM LS engines.

Designed for Gen 3 LS1 / LS6 and Gen 4 LS2 / LS3 / LS7 applications, the harness provides a clean and reliable foundation for engine conversions, replacement wiring, performance builds and motorsport applications.

The harness includes the main engine connections required for installation, including injectors, ignition coils, throttle control and CAN devices, while also providing spare inputs and outputs for additional sensors and vehicle functions.

Each harness is manufactured using Link AVSS automotive wire and Link's standard wiring colours.

Before dispatch, each harness is tested for:

• Correct pinout

• Shorts

• Splice resistance

• Insulation resistance

• General wiring integrity

Suitable Applications

The harness is designed to support:

• Gen 3 LS1

• Gen 3 LS6

• Gen 4 LS2

• Gen 4 LS3

• Gen 4 LS7

The same base harness can be adapted to different LS engine configurations using the appropriate Link adapter looms and accessories.

ECU Compatibility

Designed for use with:

• Link G4X StormX

• Link G4X XtremeX

Throttle Compatibility

The harness supports both:

• Cable-operated throttle bodies when used with the LS Stepper Adapter

• Drive-By-Wire throttle bodies when used with the LS DBW Adapter

Harness Features

• Terminated engine harness for LS applications

• Supports Link StormX and XtremeX ECUs

• AVSS automotive wiring

• Link standard wiring colours

• 12 spare connections for additional functions

• Powered DTM4 CAN connector

• Injector connections

• Ignition coil connections

• Throttle connections

• MAP sensor connection

• Knock sensor connection

• Alternator connection

• CAN device connection

• Spare I/O for additional sensors and switches

CAN Connection

The harness features a powered DTM4 CAN connector suitable for use with compatible Link CAN accessories and cables.

This allows connection of devices such as:

• CAN Lambda

• Displays

• Keypads

• Other CAN-based accessories

Injector Connections

The harness uses EV1 / JPT injector connectors, which plug directly into many common LS1 injectors.

Adapters may be required for:

• Early truck engines using Multilec injector connectors

• Later LS3-style USCAR / EV6 injectors

Ignition Coil Connection

The harness supports the factory 7-pin coil harness connector used on supported LS applications.

MAP Sensor Connection

The harness supports Link MAP sensors directly.

To retain a factory Gen 3 MAP sensor, use the appropriate LS MAP Adapter.

Gen 4 factory MAP sensors require additional adaptation.

Alternator Connection

The harness supports the factory F-Body alternator arrangement.

Gen 4 Engine Requirements

When using the harness with Gen 4 engines, additional adapters or modifications may be required.

These can include:

• Cam sensor harness extension for the front-mounted Gen 4 cam sensor

• Minor modification to the crank sensor connector

• Injector adapters for USCAR / EV6 injectors

• Gen 4 Knock Adapter Loom

• Gen 4 MAP sensor adapter / extension

Please check the exact engine specification and connector types before ordering the required adapters.

Fuse Box and Relay

A matching Link LS Fuse Box and Relay is available separately for installations requiring a complete power distribution setup.

Please Note

This is a configurable LS engine harness designed to work with a range of Gen 3 and Gen 4 applications.

The exact adapter looms required will depend on the engine generation, throttle type, injector connectors, knock sensors, MAP sensor and cam sensor arrangement.