Standalone Wiring Harness – LS Vortec DBW Engines (2003–2007) | Fits 4.8L / 5.3L / 6.0L with 4L60E Transmission | Plug & Play | Delphi Connectors

Standalone Wiring Harness – LS Vortec DBW (2003–2007)

This plug-and-play standalone wiring harness is designed for LS-based Vortec engines with drive-by-wire throttle bodies and 4L60E automatic transmissions. Ideal for LS swap projects in muscle cars, trucks, and off-road builds.

Key Features

• Supports LS 4.8L / 5.3L / 6.0L DBW engines (2003–2007)
• Compatible with 4L60E transmission only
• Includes OBD-II DLC port, MIL light, tach, speedo, TCC, and park/neutral wiring
• Delphi OEM connectors + TXL high-temp wire
• Sliding grommet seal for firewall pass-through
• Supports Multec injectors; EV6 adapters available upon request

Fitment Compatibility

• Engine Platforms:
• LM7 – 5.3L
• LQ4 / LQ9 – 6.0L
• LR4 – 4.8L
• Transmission: 4L60E only
• Throttle: Drive-by-wire (DBW) only – not compatible with cable throttle

Package Includes

• 1 x Standalone Wiring Harness – pre-terminated
• 1 x OBD-II DLC port
• 1 x Instruction Manual

Installation Notes

• Requires 4-wire hookup: switched power, constant power, ground, fuel pump
• PCM mounting length: 4–5 ft from rear cylinder head
• Professional installation recommended

Shipping & Warranty

• Free FedEx Express shipping (USA & Australia)
• Estimated delivery: 3–8 business days
• 30-day return policy
• 2-year product guarantee