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
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Looking for an OEM Quality, Stand Alone Engine Harness?
IN STOCK for SAME DAY SHIPPING
Take the wiring headaches out of your LS swap and get your build moving.
When you’re putting a drive-by-cable LS1 into an older chassis, the last thing you need is a wiring mess slowing the project down. The HPI 1997–2006 LS1 Standalone Wiring Harness Drive-By-Cable for T56 / Non-Electric Transmission is built to simplify the swap with a standalone harness designed for 1997–2006 LS1 engines running a T56, non-electric automatic, or manual transmission.
BUILT FOR DBC LS1 SWAPS
This harness is listed specifically for 1997–2006 drive-by-cable LS1 engines, making it a strong fit for builders who want a straightforward standalone solution without unnecessary wiring complexity. It is also positioned for T56, non-electric automatic, and manual transmission combinations.
CLEANER INSTALL. LESS GUESSWORK.
HPI describes this harness as including the needed dash connections, including speedometer, tachometer, park neutral, TCC, malfunction indicator, and a DLC port. That helps streamline the swap and reduces the amount of custom wiring needed to get the project finished cleanly.
BUILT LIKE A REAL SWAP HARNESS
The live page states that all harnesses are built with OEM quality and better, use GM color codes, include a high-quality sliding grommet, reinforced ring terminals, factory CPA locks, and 1200-degree fiberglass braid on heat-exposed circuits. The harness is also listed as receiving a quality check before shipment and being 100% handmade in the U.S.A.
READY FOR BIGGER INJECTOR SETUPS
The page states this harness includes EV1 injector connectors and offers free adapters to convert to EV6 or Delphi injector connectors if needed. It also lists upgraded wire for running large injectors and upgraded 60-amp relays, which makes it a better fit for performance-minded builds.
WHY HPI
At HPI, swap parts should do more than just connect. They should install clean, hold up under real use, and help move the project forward without wasting time. This harness is built for enthusiasts who want a professional standalone wiring solution for drive-by-cable LS1 swaps.
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.
