LS3-Engine Harness
LS3-Engine Harness

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The Rywire LS3-E38 wire tuck engine harness is designed for E38 LS3 plug n' play Computer Plugs.
PRICE: $999.00

ID: LS3-E38

Vehicle Type :*:


This Standalone harness was designed for a GM LS3 engine and E38 computer with manual transmission. All connectors and materials are new. Each connector is crimped with pneumatic heads to ensure an OEM crimp every time, then tagged with a yellow identification label for easy installation. All heavy interference circuits are protected and grounded with proper wire shielding. Our engine harnesses are 100% quality tested pin to pin; And resistance checked to ensure no voltage fluctuations.

NO CORE is necessary when buying a harness from us!
Please see pinnout below if you have questions on how we wire these.

Harness Connector List: (All sensors are LS3 based unless otherwise noted)
  • Chassis (2) - Deutsch connector interface to chassis
  • APP - 2010 Tahoe accelerator pedal connector (see pic for diagram)
  • Scan Tool - For Obd2 interface
  • Oil Pressure - 3pin style (vortec style)
  • Grounds (3) - (1 computer, 2 coils)
  • Spare - 3 spare wires
  • O2 (2) - 5 pin trapezoid style default
  • Crank
  • Starter
  • Reverse Lockout
  • VSS - 2 wire MAG speed sensor
  • REV- Reverse lamp switch
  • Coil 1-8 - Wired direct to coil, no sub harness (4 wire)
  • Injector 1-8 - Default Ev14/Ev6 Bosch
  • ECT - Coolant
  • ALT - 2 wire default
  • CAM
  • MAF
  • KNOCK 1-2
  • MAP - Bosch throttle body mounted pressure sensor (LS3/LS9 Vortec style)
  • Throttle body - 6pin Drive by wire throttle sensor
Attached is a PDF file of the ECU Pinout for our LS3-E38 Engine Harness:


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