Speed Scene Wiring
LS7 Wire Harness
505+ horsepower. The largest, most powerful small-block ever built. Pro Series LS7 harness with E40 ECM, fly-by-wire throttle, and complete component package. USA made since 1999.
Start a BuildLS7 Wire Harness | E40 ECM | Pro Series
The LS7 wire harness is ready for your consumption. Like all of our Pro Series harnesses, they have been tested in the field before we sell the finished product to you. Many consider the LS7 to be the largest, most powerful small-block ever built — sitting at 505 horsepower and more with a bit of tuning.
This Pro Series LS7 wire harness is wired for a standard 6-speed. We also offer a 4L65E automatic. For automatic users, please be aware: GM has made a separate controller (ECM) for the automatic transmission to shift. For an LS7 with fly-by-wire throttle and 4L65E, you will be running 2 computers.
This package price includes the computer, the program loaded for a standard shift car, HO2 sensors, O2 bungs, MAF sensor, pedal, and a 12-circuit Delphi fuse box. All tech and service is provided by in-house engineering and tech staff.
Note: This harness will NOT run the 6L80E or any paddle-shifted operating system — this is not available at this time.
What's in the Package
- E40 ECM computer with program loaded
- HO2 sensors & O2 bungs
- MAF sensor
- Accelerator pedal
- 12-circuit Delphi fuse box
- Standard 6-speed shift wiring (default)
- 4L65E automatic option available
EPA Approved Checklist
- VSS Circuit
- Diagnostic Link Connector
- Correct Emissions Connectors
- VSS Pigtail
- Alternator
- Tach Pigtail
Ready to Build Your LS7 Harness?
505+ HP. Complete package. Pro Series. USA made since 1999.
Start a Build