CORE ECU Harnesses

Harnesses for the CORE standalone ECU, sold on their own. Already have a CORE ECU and need a harness for a second build, a transmission or more inputs and outputs? Pick the one you need above.

Gen3 Drive-By-Cable LSX Harness: terminated harness for early (Gen III) LS engines with a cable throttle.

• Cam sensor connector at the rear of the engine; knock sensors routed to the valley
• Dual Bosch LSU 4.9 wideband connectors
• MAP sensor can be routed front or rear
• 20-pin input/output expansion connector
• EV6 injector connectors (EV6-to-EV1 adapters sold separately)
• Pre-terminated CAN connectors

Gen4 Drive-By-Wire LSX Harness: terminated harness for late (Gen IV) LS engines with drive-by-wire.

• Cam sensor connector at the front of the engine; knock sensors on the side of the block
• Dual Bosch LSU 4.9 wideband connectors
• MAP sensor can be routed front or rear
• 20-pin input/output expansion connector
• EV6 injector connectors (EV6-to-EV1 adapters sold separately)
• Pre-terminated CAN connectors

15' Flying Lead Harness: four AMP ECU connectors with cavity plugs and 15 feet of color-coded wire for a fully custom harness. For experienced wirers; sold as-is with limited tech support.

4L60E/4L80E Transmission Control Harness: one plug-and-play harness for GM 4L60E and 4L80E transmissions. No wiring changes or pin relocation needed.

I/O Harness: a flying-lead harness that plugs into the 20-pin expansion connector for extra sensors, cooling fans, electric pumps and other inputs and outputs. Use it when you're not running a computer-controlled transmission.

Wiring details, pin assignments and sensor part numbers are in our CORE ECU installation guide.