Proflow's LS standalone wiring harness kits offer the best in aesthetics and reliability, designed specifically for GM LS engines produced from 1997 to 2004. They are available for both cable-driven and fly-by-wire vehicles with 4L60E or T56 transmissions, and will completely replace your old harness.

Note: These are based off original LS harnesses. Some plugs may be different depending on engine build date. No oil pressure sensor wire is provided/catered for, as this is a aftermarket loom and relies on aftermarket engine management to cater for oil pressure monitoring

Kits Include:

  • Fuse/Relay Box
  • Fuel Pump Control
  • Fan Controls
  • Check Engine Lights
  • Speedometer/Tachometer
  • OBD2 Compatibility
  • Pedal and Throttle Control
  • IAC Sensor
  • MAP Sensor
  • MAF Sensor 3 pin Early Gen 3  with separate IAT sensor
  • MAF Sensor 5 pin Late Gen 3 (you will only use 1 of the MAF sensor plugs depending on your application
  • Coolant Sensors
  • Alternator Plugs
  • O2 Sensors
  • Crankshaft and Camshaft Position
  • Fuel Injectors
  • Coil Packs
  • Knock sensors

More From This Category

FAST IPU Adapter Connectors for Crank Trigger, 2 Wire/IPU Ignition Devices

FAST IPU Adapter Connectors for Crank Trigger, 2 Wire/IPU Ignition Devices

$27.61

Haltech Inputs and CAN Expansion, CAN Adaptors Hubs and Cables, Haltech CAN Cable 8 pin White Tyco to 8 pin White Tyco Length: 3000mm (120"), Each

Haltech Inputs and CAN Expansion, CAN Adaptors Hubs and Cables, Haltech CAN Cable 8 pin White Tyco to 8 pin White Tyco Length: 3000mm (120"), Each

$75.00

Haltech Elite 2000/2500 Terminated Engine Harness for Nissan RB Twin Cam with CAS harness and Series 1 (early) ignition type sub harness, Kit

Haltech Elite 2000/2500 Terminated Engine Harness for Nissan RB Twin Cam with CAS harness and Series 1 (early) ignition type sub harness, Kit

$1,413.99

MSD Harness, LS-Input, Can, Replacement, 8000

MSD Harness, LS-Input, Can, Replacement, 8000

$194.44