OVERVIEW HP Tuners offers multiple options for connecting a CORE ECU to your engine. Our harnesses are designed to provide you with a reliable, durable solution for connecting sensors, triggers and more. Select the harnesses needed for your application below. TECH SPECS Main CORE ECU Wiring Harnesses HP Tuners is thrilled to offer CORE ECU main harnesses covering multiple engines. Designed in-house, our engineers focused on routing, shielding, and layouts that will work for a variety of applications. LS Engine Wiring Harnesses: Gen III Terminated Harness (Drive By Cable) Intended for early (Gen III) LS Engines, this main harness has several unique features that make it perfect for routing on cable-driven applications. Highlights include: For Drive-By- Cable (DBC) Throttle Body Application Cam Sensor Located on Rear of Engine Dual Bosch 4.9 LSU Sensor Connectors MAP Sensor Can Be Routed to Front or Rear of Engine 20 Pin Input/Output Expansion Connector (For Use with Sub Harnesses Listed Below) Knock Sensors Routed to Engine Valley EV6 Injector Connectors (EV6 to EV1 Adapters Sold Separately) Pre-Terminated CAN Connectors Can Be Paired w/ Optional GM Transmission Harness (Part of The Above Uses for Expansion Connector) Gen IV Terminated Harness (Drive By Wire) Intended for late (Gen IV) LS Engines, this main harness has several unique features that make it perfect for routing on drive-by-wire applications. Highlights include: For Drive-By-Wire (DBW) Throttle Body Application Cam Sensor Located on Front of Engine Dual Bosch 4.9 LSU Sensor Connectors MAP Sensor can be routed to front or rear of engine. Knock Sensors on the side of the engine block. 20 Pin Input/Output Expansion Connector (For Use with Sub Harnesses Listed Below) EV6 Injector Connectors (EV6 to EV1 Adapters Sold Separately) Pre-Terminated CAN Connectors Can Be Paired w/ Optional GM Transmission Harness (Part of The Above Uses for Expansion Connector) Flying Lead Harness Intended for customers who want a completely custom harness, this kit includes four (4) ECU connectors and several section of wiring (15-ft. length). Highlights include: Four AMP ECU Connectors w/ Included Cavity Plugs Wiring – Color Coded 15-ft. Lengths Instructions w/ Connector Diagrams (Written for Experienced Users) NOTE: Tech Support will be limited on Flying-Lead Harness Applications, it is the customer’s responsibility to ensure that best wiring practices are followed. Purchases are sold as-is. Connector diagram/instructions are written for users with wiring experience. Sub-Harnesses GM 4L60E / 4L80E Transmission Harness This harness provides a single harness for GM 4L60E and 4L80E Transmissions. No wiring changes or pin relocation required. Easily upgrade to a four-speed automatic transmission with this plug & play solution. Input / Output Expansion Harness This harness provides a flying lead solution to customers who want to add additional I/O to their install. Easily wire-in extra sensors, cooling fans, electric pumps, and more. Documentation Find all electrical schematics here.
