# FAST Wiring Harness FAST Main LT1

FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors as well as digital dashes, EGT modules, and various optional accessories. The Main Harness also handles communication between the ECU and ignition devices. Main harnesses are available in TPI, LT-1, LS-1 through 9 (including truck/suv designs), Modern Hemi, Carburetor Conversions and even Rear-Engine Dragsters and Boats. FAST also offers Main Harnesses that come terminated on the sensor side but non-terminated on the ECU side to allow for a truely custom fit. All terminals, seals and connectors are available individually, so don't hesitate to try your hand at crafting your own custom harness from start to finish.

This Part Fits:

Year

Make

Model

Submodel

2006-2007

Cadillac

CTS

V

2010-2014

Chevrolet

Camaro

SS

2013

Chevrolet

Corvette

427

2008

Chevrolet

Corvette

427 Limited Edition Z06

2005-2013

Chevrolet

Corvette

Base

2010-2013

Chevrolet

Corvette

Grand Sport

2014

Chevrolet

Corvette

Stingray

2006-2013

Chevrolet

Corvette

Z06

2009-2013

Chevrolet

Corvette

ZR1

2005-2006

Chevrolet

SSR

Base

2009

Pontiac

G8

Base

2009

Pontiac

G8

GT

2009

Pontiac

G8

GXP

2005-2006

Pontiac

GTO

Base

## Details

- **Price:** 629.87 CAD
- **Vendor:** FAST
- **Type:** Wiring Harnesses

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 629.87 CAD | In stock |

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/fast-wiring-harness-fast-main-lt1)
> Updated: 2026-06-28