All Custom GM LSx Gen IV Wire Harnesses are professionally built to exceed OEM standards. All Engine & Transmission Harnesses that we offer are built using OEM Style Wires, Connectors & Terminals. The Harnesses are also enclosed in Heat Resistant Black Split Loom Tubing for a factory look. Each harness is tested prior to shipment and are designed with the Hot Rod Enthusiast in mind. The harness shown on the page is an example of a LS3 with 4L70E setup.
- Custom Harness for LS2/LS3/L7 Engines(58x Reluctor Wheel) with Electronic Throttle Body and 4L70E Transmission
- Engine Control Module
- Custom ECM/TCM Programming
- Mass-Air Flow Meter
- Oxygen Sensors
- Electronic Pedal Assembly (Corvette)
All Custom Harness Packages are Custom built to Order. Most Orders will ship after 21 days.
ECM programming specs are to be provided by the customer. Please visit our PCM Programming Page to submit your Programming config worksheet.
All Gen IV Harnesses come with these Standard Features:
- Fuse Blocks
- Diagnostic Plugs
- Check Engine Light
- Fuel Pump Relay
- Speedo – Tach – AC Clutch – Fan Relay Leads
- Power Wires
- Cruise Control (when Requested)
All Custom GM LSx Gen IV Wire Harnesses are professionally built to exceed OEM standards. The harness shown on the page is an example of a LS3 with 4L70E setup. Select from the list of harness packages below for more details about each harness package.
We offer Harness Kits for GM Gen IV (58x Tooth Reluctor Wheel) Engines. This includes 2006-2010 LS2 – LS3 – LS7 and 2007-2010 4.8L – 5.3L – 6.0L – 6.2L Engines with 4L60E – 4L70E – 4L80E – 6L80E – 6L90E Transmissions. A 58 tooth engine requires an ECM and TCM plus uses the “Gray” 58x crank sensor.
We also offer Wire Harness for the LY6 – L92 – L9H – L99 Engines with Variable Valve Timing.