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Current Performance Wiring - Standalone LS Engine Wire Harness 1997-2006 DBC (Multec Injector 4.8L, 5.3L, 6.0L) 4L60E Transmission

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Standalone LS Engine Wire Harness 1997-2006 DBC (Multec Injector 4.8L, 5.3L, 6.0L) 4L60E Transmission

Photos of products are sample images. Actual product may vary.

Designed to be a universal fit LSx engine harness, our Stocker Series harnesses come standard with a sealed fuse box, Techflex split braided loom, and heat shielding to protect areas of the harness that are typically near exhaust.

Easily add electric fans with our Sealed E-Fan Add-on Module

The CPW Stocker series harness contains all of the following connections:

  • ECM (Blue and Red Connections)
  • Crank position sensor (3 pin black, rear passenger side behind starter. For 24x Crank reluctor)
  • Cam position sensor (3 pin black, top rear of engine)
  • Knock sensors (2 pin plug, top rear of engine, connects to factory sub-harness)
  • MAP sensor (3 pin gray plug, sensor mounts to intake in various locations depending on intake)
  • Engine coolant temperature (2 pin plug, front Driver’s side cylinder head)
  • Mass air flow (5 pin plug, front of engine. Sensor p/n 19330121 or equivalent)
  • Injectors (2 pin plugs, optional Multec, EV6, and EV1 connection)
  • Coils (7 pin gray plug, between middle 2 injectors on each side of engine. Connects to factory coil sub-harness)
  • Throttle position sensor (3 pin round plug, TPS mounted to throttle body)
  • Idle air control valve (4 pin flat plug, IAC motor mounted to throttle body)
  • Oxygen sensors (4 pin flat or square plug depending on application. Routed out back side of engine, AFS138 or equivalent)
  • Alternator (4 pin plug, 2 wires. Connection for common GM LSx 4 pin alternators)
  • Diagnostic link connector (16 pin black, intended to mount inside vehicle for ease of access)
  • Vehicle speed sensor (2 pin plug long enough to reach tail of transmission)
  • Optional – 4L60E or 4L80E Automatic transmission connector (Round gray plug out back of engine)
  • Optional – Input speed sensor (2 pin plug, included with 4L80e transmission option)

Bare input and output wires

  • 12V switched (Pink/Black, ignition power signal from vehicle ignition switch)
  • Power to Fuel Pump (Gray, 20A fused output from fuel pump relay pre-installed in sealed fuse box)
  • Tachometer (White, engine speed output from ECM)
  • Speedometer (Dk Green/White, calculated vehicle speed output from ECM)
  • Check Engine (Brown/White, ground signal from ECM to operate service engine light)
  • Fan 1 (Dark Green, control wire from ECM to operate primary electric fan relay)
  • Fan 2 (Dark Blue, control wire from ECM to operate secondary electric fan relay)
  • Optional – Brake Switch (Purple, connect to brake switch for TCC lockup control)

More Information

Bullet Point 1 Made in the USA with OEM connectors for the best possible connections
Bullet Point 2 Gen III LS1 standalone harness
Bullet Point 3 This swap harness is specific for 1999-2006 Gen III 24x engines with Multec Injectors and 4L60E
Bullet Point 4 Compatible with Automatic Transmissions
Bullet Point 5 Compatible with Drive by Cable Throttle Bodies
Weight 8.000000
ICT Manufacturer Current Performance
United States United States
Length Inches 15
Width Inches 15
Height Inches 3
Download .PDF for Vehicle No

WARNING - This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to


ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.


STEEL (steel bolts):  Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.