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Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
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For more information, visit www.P65Warnings.ca.gov.
03-07 LS VORTEC STANDALONE WIRING HARNESS DRIVE BY WIRE W/4L60E 4.8 5.3 6.0 EV6
Take the wiring headaches out of your LS swap and get your build running the right way.
When you’re putting a 2003–2007 LS Vortec drivetrain into an older muscle car, street rod, or non-emissions-controlled project, the last thing you need is wiring confusion slowing the build down. The HPI 03–07 LS Vortec Standalone Drive-By-Wire Wiring Harness is built to simplify your swap with a plug-and-play setup designed for 4.8, 5.3, and 6.0 truck engines using drive-by-wire and 4L60E transmissions.
BUILT FOR LS SWAPS
This harness is designed for 2003–2007 Chevrolet, GMC, Cadillac, and Hummer truck engines and is intended for retrofit use in older vehicles and newer non-emissions-controlled builds. It allows use of the factory Vortec intake manifold and supports Multec injectors, with optional EV6 plug-and-play adapter connectors available by request in the buyer notes.
PLUG-AND-PLAY SIMPLICITY
The harness is described as a complete engine and transmission harness with four-wire hookup requirements, using switched power, constant power, and ground connections. It also includes the needed dash connections for speedometer, tachometer, park neutral, TCC, malfunction indicator, and a DLC port, helping make your swap cleaner and easier to finish.
BUILT TO HANDLE REAL-WORLD SWAP DEMANDS
HPI states these harnesses are professionally constructed with brand new GM Delphi connectors and TXL high-temperature wire to GM specifications. The harness also features a sliding grommet seal for a professional, leak-resistant installation and includes 36 inches of added length for easier PCM mounting under the dash.
MADE FOR PERFORMANCE AND DURABILITY
From reinforced ring terminals to factory CPA locks, 1200-degree fiberglass braid on heat-exposed circuits, and upgraded 60-amp relays, this harness is built for enthusiasts who want more than a bare-minimum swap solution. Every harness is also described as quality inspected before shipping and handmade in the U.S.A.
WHY HPI
At HPI, swap parts should do more than just connect. They should fit right, install clean, and hold up under real performance use. This harness is built for builders who want a professional-looking LS swap without cutting corners.
Features:
Designed for 2003–2007 LS Vortec drive-by-wire swaps
Fits 4.8L, 5.3L, and 6.0L truck engine applications
Compatible with 4L60E transmissions
Complete engine and transmission harness
Plug-and-play style standalone swap harness
Supports factory Vortec intake manifold
Supports Multec injectors
Optional EV6 plug-and-play injector adapters available by request
36 inches of added length for under-dash PCM mounting
Sliding grommet seal for cleaner installation
Built with brand new GM Delphi connectors
TXL high-temperature wire to GM specifications
Upgraded 60-amp relays
1200-degree fiberglass braid on heat-exposed circuits
Reinforced ring terminals
Factory CPA locks
Dash connections included
Instruction manual included
Handmade in the U.S.A.
Fitment:
2003–2007 Chevrolet / GMC / Cadillac / Hummer truck LS Vortec engines
4.8L / 5.3L / 6.0L
Drive-by-wire applications only
4L60E or 4L80E transmission setups
Older muscle cars, street rods, and newer non-emissions-controlled vehicles
What’s Included:
Complete engine and transmission harness
Install instruction manual
Needed dash connections including speedometer, tachometer, park neutral, TCC, malfunction indicator, and DLC port
Price: $239.00
Get your LS swap wired with a harness built to save time, clean up the install, and keep your project moving forward with confidence.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
