Painless Performance EFI Wiring Harness GM LS1/LS6 1998-2004

Painless Performance:
60508
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MSRP $625.98
$549.99
You save 12%

Painless Performance EFI Wiring Harness for 1998, 1999, 2000, 2001 and 2002 LS1 Mechanical Throttle Body Engines Using a 1999+ LS1 / LS6 ECM with a 4L60E/4L65E Automatic or T56 Manual Transmission.

Re-wiring, or any electrical upgrades, can be costly and difficult. In an effort to relieve both of these issues from the restorative process, CJ Pony Parts and Painless Performance offer you this EFI Wiring Harness for 1998, 1999, 2000, 2001 and 2002 LS1 Mechanical Throttle Body Engines Using a 1999+ LS1 / LS6 ECM with a 4L60E/4L65E Automatic or T56 Manual Transmission typically found in 1998-2002 Camaros and Firebirds.

Features and Benefits:
- 5.7L GM LS1 and LS6 EFI harness for 98-04 engines with cable throttle body
- 8 fuses with 2 ignition & 1 fuel pump relay
- 4 feet between engine and ECM
- Works with 4L60E, and T56 transmissions
- Uses Blade fuses
- Based on 2000 Camaro Wiring color code
- Circuit designations printed on wire tags
- Perfect for swapping LS engine into a classic pickup

Additionally, this harness will work on 1997-2004 Throttle By Wire (TBW) LS1/LS6 engines that have been changed to mechanical throttle body or any 1999-2006 (4.8, 5.3 and 6.2) Vortec truck engine that has been changed to a factory of aftermarket LS1 intake manifold, mechanical throttle body and injectors. To ensure your wiring installation is as easy as humanly possible, an 8 circuit modular fuse block and GM color coded wires are included.

Kit Includes:
- All new fuel injection harness with OEM fitment connectors and harness breakouts
- OBDII connector, mounting bracket and check engine light
- Rubber grommet
- Mounting hardware

Fuse Block Protects the Following Circuits:
- DLC B+
- Driver Side Injectors and Coils
- Dual 40 amp Ignition Relays
- Fuel Pump
- Heated O2 Sensors, Mass Airflow Sensor, & Brake Switch
- Pass Side Injectors and Coils
- ECM and Malfunction Indicator Lamp
- ECM B+
- Transmission

Harness Includes Connections for the Following Components:
- Alternator
- Brake Switch
- Cam Position Sensor
- Crank Position Sensor
- Data Link Connector
- Driver/Pass Front O2 Sensors
- 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 Coils
- Ignition Switch Signal
- Injectors
- Intake Air Temperature Sensor
- Knock Sensors
- Malfunction Indicator Lamp
- MAP Sensor
- Mass Airflow Sensor
- ECM
- Reverse Lockout Solenoid
- Skip Shift Light
- Skip Shift Solenoid
- Starter
- Tachometer
- Throttle Position Sensor
- Transmission
- VATS
- Vehicle Speed Sensor
- VSS Output for Speedometer

Vehicle Fitment:
- 1960-1987 C10
- 1948-1979 F-100

Please Note: 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.

If you've ever done a wiring repair or replacement on your Mustang, you know the frustration that those projects can often cause. Wiring harnesses aren't the easiest to work with, and never go in painlessly, unless you order your wiring from Painless Performance. With more than 20 years of wiring experience and a reputation for being painless to install, the parts from Painless Performance are going to be exactly what you need.

California Residents: Proposition 65 Warning

Vehicle Fitment

This product will fit the following C10 years:

This product will fit the following F-100 years:

  • 1948,
  • 1949,
  • 1950,
  • 1951,
  • 1952,
  • 1953,
  • 1954,
  • 1955,
  • 1956,
  • 1957,
  • 1958,
  • 1959,
  • 1960,
  • 1961,
  • 1962,
  • 1963,
  • 1964,
  • 1965,
  • 1966,
  • 1967,
  • 1968,
  • 1969,
  • 1970,
  • 1971,
  • 1972,
  • 1973,
  • 1974,
  • 1975,
  • 1976,
  • 1977,
  • 1978,
  • 1979,
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