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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.
Gen IV LS3 Standalone Swap Harness – 58x, Drive-By-Wire, 6L80E/6L90E Compatible
For 2006–2014 LS/Vortec Swaps | Built for Performance & Reliability
Application Fitment
This standalone harness is designed to work with the following Gen IV GM engines and vehicles:
2006–2007 Corvette 6.0L LS2
2008–2013 Corvette 6.2L LS3
2010–2014 Camaro SS 6.2L
2008–2009 Pontiac G8 GT 6.0L
2007 (New Body Style)–2014 GM Vortec Trucks with 4.8L, 5.3L, 6.0L, or 6.2L Engines
These are swap harnesses and not direct replacement OEM harnesses.
⚠️ Note: 2014+ 6.0L Vortec applications originally using the E78 ECM will require conversion to an E38 ECM and an older-style throttle body for compatibility.
Description
Upgrade your engine swap with confidence using our SPDZ1 Gen IV LS3 Standalone Harness—engineered for clean, reliable installations of 58x Gen IV LS engines with Drive-by-Wire throttle control and EV6 injectors, paired with a 6L80e or 6L90e transmission.
Whether you're running a Corvette LS3, Camaro SS, or a Vortec truck engine, this harness supports 4.8L to 6.2L configurations and is built to meet or exceed OEM reliability and performance standards.
✅ Premium Connectors: Uses only OEM Aptiv, Kostal, Bosch, Molex, and Yazaki connectors
✅ CPA Locks: Connector Position Assurance (CPA) locks included for security and longevity
✅ Adjustable Firewall Grommet: Sliding Delphi grommet included for a professional firewall seal
✅ Long Reach Design: 5 feet from the rear passenger side of the intake for flexible PCM mounting
✅ Weatherproof OEM-Style Fuse Block: Complete with cover, labeling, and splash guards
Pre-Wired Factory Connections (Included):
Throttle Body (6-pin Drive-by-Wire)
Oil Pressure Sensor
Coolant Temperature Sensor
Alternator/Generator
All 8 EV6 Injector Connections
Bank 1 & Bank 2 Coil Harnesses
Knock Sensors (Bank 1 & 2)
Camshaft Position Sensor
Crankshaft Position Sensor
Mass Air Flow Sensor (MAF)
MAP Sensor
Intake Air Temp (IAT – if Speed Density selected)
Upstream O2 Sensors (Bank 1 & 2)
6L80e/6L90e Transmission Connector
A/C Pressure Sensor
DLC Port (OBD-II)
Accelerator Pedal Position Sensor
Single Battery Constant Power
System Ground
User-Connected Wiring Required:
Fuel Pump Power Feed (Required)
Switched Ignition Source (Required)
Malfunction Indicator Light (CEL/MIL)
Speedometer Signal
Tachometer Signal
TAP Shift (Optional for Auto Transmissions)
Cooling Fan 1 Control (Low Speed or Single Fan)
Cooling Fan 2 Control (High Speed or Dual Fan Systems)
Brake Switch Input
SPDZ1 Wiring Solutions are designed for performance builds where reliability, ease of installation, and OEM quality matter. Whether it's a weekend swap, full race build, or restomod, trust our harnesses to power your LS dreams.
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.
