GM LT1-LT4 Fuel Injection Wiring Harness

Painless Performance 60502 fuel injection wiring harness.

For installations of 1992 - 1997 LT1 / LT4 V8 engines with 4L60E transmission using an ECM with service #16188051 or 88961150 into any vehicle.

These engines and transmissions were factory equipped in Camaro, Firebird, Corvette, Roadmaster, Impala and Caprice.

The V8 LT1 & LT4 Sequential Fuel Injection engines this Painless Performance®™ harness operates are the perfect upgrade for any project vehicle.

Harness includes all connections needed for fuel injection and transmission operation:


Ignition Module




Left & Right O2





Air Pump Relay


Fuel Pump Relay

Canister Purge Solenoid


Harness includes its own fuse block with ignition relays.

4 feet of harness between ECM connections and main engine breakout gives ample room for custom installation and mounting of ECM behind dash, in the kick panel or glove box.

This kit includes:

1. All new fuel injection harness with OEM fitment connectors and harness breakouts.

2. OBDII connector, mounting bracket and check engine light.

3. Vehicle Anti Theft System (VATS) bypass module

4. Crimp on terminals and rubber grommet.

5. Mounting hardware.

6. Installation manual.

TECH NOTE: The PCM programming should match the engine and transmission combination and may require modification to turn off the check engine light.

TECH NOTE: When using the 1994-1995 harness, minor engine ignition component modification may be required.

TECH NOTE: The 1992-1993 components may be used on the 1994-1997 engines when not using the 4L60E transmission.

Painless 60502 LT4 LT1 fuel injection wiring harness PAINLESS-PERFORMANCE-60502$759.97
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