2017-24 Gen V 3 WIRE 5.3/6.2 LT1 L83 L84 L86 L87 w/ 4L60-75E Standalone Harness 93+
2017-24 Gen V 3 WIRE 5.3/6.2 LT1 L83 L84 L86 L87 w/ 4L60-75E Standalone Harness 93+
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
HPI Gen V 3-wire standalone harness for a 4L60E / 4L75E-family transmission. This listing is for the stated 2017–2024 LT1 / L83 / L84 / L86 / L87 applications. Verify your engine wiring and transmission before ordering.
WE also have GEN V 6L80E/6L90E T56 3 wire 4 wire 8L90E 3 wire 4 wire
WARNING: ECU NOT INCLUDED This is a 3 wire. In 2017, it was a split year for 3 wire and 4 wire so please make sure you know which wire you have. This harness is for a car or truck pedal. This harness is also for a 2 wire alternator. If you have a 4 wire alternator which is rare then you can buy a converter adapter from holley.
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Description
This is the same setup that PSICONVERSION will sell you for $1920.00. With a long wait period.
COMES WITH TCM CONTROLLER LT1 and 4L80 conversion HARNESSAPPLICATION: 2017 – 2021 3 wire GEN V LT1 and L83 / L86 ECOTEC3 ENGINES WITH
Transmissions
4L60-75E or EV 93+Complete engine wiring harness, Instruction Manual Fuse/Relay Box Fuel Pump Control (Relay included) Fan control option wires, Check Engine Light, Speedo output, Tachometer, OBD2 Port Accelerator Pedal and Throttle Body control (DBW setups) IAC and TPS on DBC setups MAF Sensor MAP Sensor Engine Coolant Temp Sensor Alternator Control (2) Upstream Oxygen Sensors Crankshaft Position Camshaft Position Fuel Injectors Coil Packs Automatic or Manual Transmission control Knock Sensors
PARTS INCLUDED: Complete engine and transmission wiring harness, Instruction Manual
- Fuse/Relay Box
- Fuel Pump Control (Relay included)
- Fan controls (Relays and fuse available separately KIT-1010)
- Check Engine Light, Speedo output, Tachometer, OBD2 Port
- Accelerator Pedal and Throttle Body control (DBW setups)
- IAC and TPS on DBC setups
- MAF Sensor connector
- MAP Sensor connector
- Engine Coolant Temp Sensor
- Alternator Control
- (2) Upstream Oxygen Sensors
- Crankshaft Position
- Camshaft Position
- Fuel Injector connectors
- Coil Pack connectors
- Automatic or Manual Transmission control
- Knock Sensors
NOTES: These harnesses are designed for retrofitting ’2017-2021 3 wire LT1/L83/L86 GEN V engines into older muscle cars and street rods or newer non-emissions controlled vehicles. They are completely plug and play with four wire hookup (switched power, constant power and ground connections required). Harnesses are designed with a sliding grommet seal and 4 – 5 feet of length from the rear of the cylinder head to the PCM mounting position under the vehicle dashboard. A sliding grommet seal allows for professional, leak proof installation.
ADDITIONAL ITEMS REQUIRED: E92 ECM,
ADDED FEATURES INCLUDE1 YEAR WARRANTY36" ADDED LENGTH FOR EASY COMPUTER MOUNTING
UPGRADED WIRE FOR RUNNING THOSE BIG INJECTORS (will run any size injector without issues)
UPGRADED 60-AMP RELAYS
Harness comes with a complete install instruction packet.
Electrical part: what to know
Many electrical faults are a bad connection rather than a failed part, so check grounds and connectors first.
Fitment notes
- Specs, lead time and warranty come from the manufacturer and supplier and can change. The details above this guide are the latest we have.
Not sure it fits? Send us your year, make, model, engine and trim and we'll check before you order.
Ask about fitmentWhat else to plan for
- Fuses and relays. Cheap to keep spares.
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