SPDZ1 Harness Gen IV LS3 Standalone Swap Harness – 58x, Drive-By-Wire, 6L80E/6L90E Automatic Transmission
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:
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2006–2007 Corvette 6.0L LS2
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2008–2013 Corvette 6.2L LS3
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2010–2014 Camaro SS 6.2L
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2008–2009 Pontiac G8 GT 6.0L
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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.
Why Choose SPDZ1?
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✅ OEM-Tier TXL Wiring: Color-coded GM-standard TXL wire ensures heat resistance, durability, and easy troubleshooting
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✅ Premium Connectors: Uses only OEM Aptiv, Kostal, Bosch, Molex, and Yazaki connectors
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✅ CPA Locks: Connector Position Assurance (CPA) locks included for security and longevity
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✅ Adjustable Firewall Grommet: Sliding Delphi grommet included for a professional firewall seal
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✅ Long Reach Design: 5 feet from the rear passenger side of the intake for flexible PCM mounting
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✅ Weatherproof OEM-Style Fuse Block: Complete with cover, labeling, and splash guards
Pre-Wired Factory Connections (Included):
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Throttle Body (6-pin Drive-by-Wire)
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Oil Pressure Sensor
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Coolant Temperature Sensor
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Alternator/Generator
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All 8 EV6 Injector Connections
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Bank 1 & Bank 2 Coil Harnesses
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Knock Sensors (Bank 1 & 2)
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Camshaft Position Sensor
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Crankshaft Position Sensor
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Mass Air Flow Sensor (MAF)
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MAP Sensor
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Intake Air Temp (IAT – if Speed Density selected)
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Upstream O2 Sensors (Bank 1 & 2)
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6L80e/6L90e Transmission Connector
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A/C Pressure Sensor
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DLC Port (OBD-II)
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Accelerator Pedal Position Sensor
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Single Battery Constant Power
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System Ground
User-Connected Wiring Required:
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Fuel Pump Power Feed (Required)
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Switched Ignition Source (Required)
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Malfunction Indicator Light (CEL/MIL)
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Speedometer Signal
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Tachometer Signal
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TAP Shift (Optional for Auto Transmissions)
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Cooling Fan 1 Control (Low Speed or Single Fan)
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Cooling Fan 2 Control (High Speed or Dual Fan Systems)
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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.
Pairs well with
Ships within 1-2 business days.
Free shipping & returns
SPDZ1 Harness Gen IV LS3 Standalone Swap Harness – 58x, Drive-By-Wire, 6L80E/6L90E Automatic Transmission
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.