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1992-97 GM LT1 Harness Extra Length Part No 60505


Engine: 4.3L (V8), 5.7L Sequential Fuel Injection
Trans.: 4L60E

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

If you plan to mount the ECM under or behind the dash or glove box please see Painless Performance®™ part number 60502 as it provides 4 feet of harness length between the main engine breakout and the ECM connectors.

Painless Part Number: 60505 Category: Tags: , , , , , , , , , , Product ID: 21195


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.  

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 extended-length harness allows eight feet from the back of the intake manifold to where the fuse block and ECM mount. Perfect for those who plan to mount these components under the seat or in the center console.

This kit includes:

  • All new fuel injection harnesses with OEM fitment connectors and harness breakouts.
  • OBDII connector, mounting bracket and check engine light.
  • Vehicle Anti Theft System (VATS) bypass module
  • Rubber grommet.
  • Mounting hardware.
  • Installation manual.

This harness also requires the following mating parts; ECM #16188051 or #88961150.

We recommend checking the online manual for the full list of required mating parts before ordering.

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