GM Gen IV E40 (2005–2006 LS2)
Drive-By-Wire Standalone Wiring Harness
for Jeep Conversions (Standalone Harness Package)

Novaks Configurable Harness Package

WH-G4-E40

Transmission: Select transmission 4L60/65E 4L80/85E Manual / Non-Electric

Mass Air Flow: Select MAF strategy 5 Wire LS2 LS3 Card Style 5 Wire Speed Density

ALT: Select alternator connector 4 Cavity 2 Cavity

Throttle Pedal: Select pedal style Corvette GTO Trailblazer Envoy

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Novak has long been the go-to source for clean, reliable wiring integration on Jeep swap projects. For customers running the 2005–2006 Gen IV LS2 with the E40 ECM, this page provides a conversion-focused standalone harness package configured to match your drivetrain and intake strategy.

We’ve partnered with BP Automotive to provide a premium, conversion-focused harness package — labeled, simplified, and configured to match your build using the options above (transmission, MAF strategy, alternator plug, and throttle pedal family).

Fitment note: This harness is intended for 2005–2006 LS2 / E40 Drive-By-Wire applications. If you’re not sure which ECM you have, confirm before ordering to prevent delays.

What This Harness Is

• Standalone GM Gen IV LS2 (E40) engine harness
• Drive-By-Wire (DBW) oriented harness package
• Configured to your build using the options above (transmission, MAF strategy, ALT, throttle pedal)
• Designed for conversion installs — organized, labeled, and intended for clean Jeep integration

Choosing Your Options

The references below help you identify the correct connector/pedal style before ordering.

Transmissions

4L60E / 4L65E

Select Option

4L80E 4L85E

Select Option

Manual / Non Electric

Select Option

Mass Air Flow Strategy

5 Wire (LS2)Common 5-wire connector family

Select Option

LS3/LS7 Card StyleCard-style connector

Select Option

Speed DensityIAT Only

Select Option

If you’re running Speed Density, you will not run a MAF sensor (IAT only).

ALT (Alternator Plug)

4 Cavity4-pin alternator connector

Select Option

2 Cavity2-pin alternator connector

Select Option

Throttle Pedal

CorvetteCorvette pedal style

Select Option

GTO / G8GTO / G8 Style Pedal

Select Option

TrailblazerTrailblazer style pedal

Select Option

EnvoyEnvoy style pedal

Select Option

If you already have a donor pedal, match your selection to the pedal family you will run in the Jeep.

Jeep Conversion Integration

Many standalone harnesses are built generically. This offering is selected specifically to support the conversion workflow Novak customers expect: clean routing, practical branch lengths, and a simplified integration mindset for Jeep installs.

PCM / ECM Notes

• This harness is intended to pair with the E40 control system used on 2005–2006 LS2 applications.
• Transmission selection impacts wiring and ECM requirements (4L60/65E vs 4L80/85E vs manual).
• MAF strategy must match the operating strategy you will run (including Speed Density).
• Throttle pedal selection must match the pedal you will run in the Jeep (or the donor pedal you already have).

If you need help confirming your ECM/harness match, contact our sales team and we’ll help you get it right before you order.

Important Notes

• Emissions & O2 sensors: Your final configuration must comply with your local jurisdiction.
• Do not modify harness circuits unless you fully understand the effect on reliability and warranty coverage.
• Lead times: Build/ship timing can vary seasonally. If your project is schedule-driven, contact us for current timing.

Need the Rest of the Swap Electronics?

• Vehicle Speed Sensor solutions (speed signal for GM ECM + speedometer needs)
• Tachometer signal solutions for popular Jeep clusters
• PCM mounting bracket assembly for clean underhood installation

Support

If you’re not certain which option set matches your engine, call our sales team before ordering. A few minutes confirming transmission type, MAF strategy, alternator plug, and throttle pedal style prevents delays and rework.

For inquiries and orders, contact our sales team at the number listed on the Contact page.