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1997-2004 GM LS1/LS6 Integrated EFI & Chassis Harness – Mechanical TB Part No 60608


Engine: 5.7L LS1 / LS6 w/ Cable Throttle Body
Trans.: 4L60E

Number of Circuits: 26 Fuse with 7 Relays
Fuse Type: Mini Blade & Maxi Fuse
Firewall Passthrough: Multiple Grommet
Color Code Based:  2000 Camaro
Circuit Designations: Printed Wire Tags on all Connectors and Printed on Wire for Open Ended Wires



This harness has the following chassis connections:

  • A/C & Heat
  • Accessory / Cigarette Lighter
  • Backup Lights
  • Brake Lights
  • Charging
  • Cruise Control
  • Courtest & Dome Light
  • Electric Fuel Pump
  • Emergency Flashers
  • Cooling Fan Relay #1
  • Cooling Fan Relay #2
  • Fused Power Source
  • Headlights
  • Horn Relay
  • Ignition Coil
  • Instrument Panel Lighting and Gauges
  • Park Lights
  • Power Antenna
  • Power Door Locks
  • Power Windows
  • Radio/Clock (Constant and Switched)
  • Starting
  • Tail Lights
  • Third Brake Light
  • Turn Signals
  • Wipers

The fuel injection harness includes connections for the following components:

  • A/C Compressor
  • Alternator
  • Cam Position Sensor
  • Coolant Temperature Gauge
  • Crank Position Sensor
  • Data Link Connector
  • Driver/Pass Front O2 Sensors
  • Engine Coolant Temperature
  • Fuel Pump Relay
  • Grounds
  • Idle Air Control
  • Ignition Coils
  • Ignition Switch Signal
  • Injectors
  • Intake Air Temperature Sensor
  • Knock Sensors
  • Malfunction Indicator Lamp
  • MAP Sensor
  • Mass Airflow Sensor
  • Oil Pressure Gauge
  • ECM
  • PRNDL Switch
  • Starter
  • Tachometer
  • Throttle Position Sensor
  • Transmission
  • Vehicle Speed Sensor
  • VSS Output for Speedometer
Painless Part Number: 60608 Category: Tags: , , , , , , , , , , , , , , , , , Product ID: 21219


Our integrated EFI/Chassis harnesses are the perfect solution for anyone doing a complete rewire of a vehicle as well as transplanting a GM Gen III fuel-injected engine. This kit is designed for use on 1997-2004 LS1 engines with a 4L60E transmission. The chassis wiring and fuel injection wiring are fully integrated into a single 26-circuit/7 relay fuse block, eliminating the need to have separate fuses and relays for the fuel injection. The chassis harness connections are the same GM color-coded connections as our 10201 kit. The fuel injection connections include the same label connections as our 60508 harnesses. These harnesses do not support flex fuel engines and require the use of a mechanical throttle body. Included in this kit you will also find all the required terminals & connectors for easy installation.

This harness also requires the following mating parts; ECM #12200411 (Painless # 60700)

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


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