Haltech HT045650 - Manual (Page 4)

Harness Overview
The Haltech GM LS1 / LS6 Terminated Engine Harness is a plug and play solution
for wiring a General Motors LS1 or LS6 Engine.
Installation is simple and easy as the harness is designed for the engine, all lengths
are correct and all wires are clearly labeled.
Notes on installation:
• Make sure your Engine is grounded directly to the chassis of the vehicle.
A heavy gauge ground / earthing strap should be used to ground your engine to the
chassis of the vehicle. The Haltech Terminated Engine harness does not ground
your engine.
• Keep all wires away from the Exhaust manifold.
Wideband 02 Inputs (02-1 , 02-2)
Wideband 02 sensors accurately measure the Air/Fuel ratio of the Engine which is
required for precise tuning and control of the engine.
Used in conjunction with the Haltech Dual Wideband kit (HT010704) the
Wideband 02 inputs allows for quick and easy installation of the sensors and controller.
Connect your optional Haltech Wideband Sensors (HT010714) directly to the supplied
connectors labeled 02-1 and 02-2 in the engine bay.
Connect the Wideband controller to the allocated connector containing the 5 for the
wideband controller. If you purchasd a Haltech Wideband with your kit, it has been pre-
terminated and will plug directly into your harness.
Connect the wideband sensor connectors to the connectors marked 1 and 2 located
near the ECU connectors.
Your Haltech ECU will now have access to correct Air /Fuel Ratio readings allowing for
more precise tuning and control of your engine.
Wideband Controller Wiring
Red: +12V Supply to Wideband controller
Black: Power Ground (Thick Wire)
Black: Signal Ground (Thin Wire)
Grey/Orange (shielded): O2 Input 1
Grey/Yellow (shielded): AVI1 - O2 input 2
WARNING!
Damage can occur to your harness and / or ECU if you do not ground
your engine properly. Please ensure heavy gauge cable is used.