Painless Wiring 60502 1992-1997 GM LT1 Engine Harness

Take advantage of GM's electronic engine management system with this Painless Wiring Harness. Complete standalone harness allows you to install late model GM fuel injected engine and correct computer into almost any chassis. Harness includes all connections needed for fuel injection and transmission operation.

This harness is standalone and is not intended to replace the OEM engine wiring.  Standalone harnesses are intended to run the designated engine & transmission only, generally when swapped into another vehicle.

Features

Number of Circuits: 8 Fuses with Ignition, Fuel Pump & Air Pump Relays

Harness Length: 4 Feet Between Engine and ECM

Fuse Type: Blade

Firewall Passthrough: Grommet

Color Code Based:  1994 Camaro

Circuit Designations: Printed Wire Tags on all Connectors and Open Ended Wires

The Fuse Block Protects The Following Circuits:

• Air Pump
• Driver Side Injectors
• Dual 40 amp Ignition Relays
• ECM & Data Link Connector
• Fuel Pump, ECM, & Mass Airflow Sensor
• Heated O2 Sensors, EGR, & Canister Purge Solenoid
• Malfunction Indicator Lamp & Brake Switch
• Pass Side Injectors
• Transmission

This harness includes connections for the following components:

• Air Pump
• Air Pump Relay
• Brake Switch
• Canister Purge Solenoid
• Data Link Connector 
• Distributor
• Driver/Pass Front O2 Sensors
• ECM
• EGR Valve
• Engine Coolant Temperature
• Fan #1 Relay Ground ECM Activation
• Fan #2 Relay Ground ECM Activation
• Fuel Pump
• Fuel Pump Relay
• Fuel Pump Test 
• Gear Indicator Switch
• Grounds 
• Idle Air Control
• Ignition Coil
• Ignition Module
• Ignition Switch Signal
• Injectors
• Intake Air Temperature Sensor
• Knock Sensors
• Malfunction Indicator Lamp
• MAP Sensor
• Mass Airflow Sensor
• Starter
• Tachometer
• Throttle Position Sensor
• Transmission
• VATS
• Vehicle Speed Sensor
• VSS Output For Speedometer

This harness is designed for 1992-1997 5.7L LT1/LT4 & 4.3L (V8) L99 engines with a 4L60E transmission, using a '94-'97 ECM. This harness will not work with ’92-’93 ECMs . These engines and transmissions were factory equipped in Camaro, Firebird, Corvette, Roadmaster, Impala, and Caprice. These harnesses also include a VATS bypass module, painless part #64024. The 4L60E transmission used must be a 1994+ which utilizes a 13th pin on the transmission connector. When using either of these harnesses on a '96 or '97 engine you must replace the coil, coil output wire and knock sensor with the parts from a '92 -'95 engine. Included with this harness is an 8 circuit modular fuse block and GM color-coded wires with labels for easy installation. 

This standard length harness allows four feet from the back of the intake manifold to where the fuseblock and ECM mount. Perfect for those that plan to mount these components under the dash or in the glove box.

Painless Performance 60502 Manual (PDF)