JEGS 555-10414 GM LS Engine Swap Wiring Harness Features:

• New GM-style fuel injector harness designed to work with OE EV1-style connectors
• OE Style OBDII connector and mounting bracket
• Compatible with all OE GM sensors
• Includes fuse block

Requirements:

• All Vortec engines require VATS (Vehicle Anti-Theft System) to be removed from the PCM. If VATS is not removed from the PCM, the engine will NOT start. A PCM such as 764-60711 can be used.
• Vortec harnesses utilize two sensors on each side of the engine, one before and one after the catalytic converter. The rear 02 sensors (after the catalytic converter) are NOT used.
• All Vortec engines utilize an EGR, Air Pump, and CCP features for emission control. This harness does not include provisions for EGR, Air Pump, and CCP are not necessary for engine operation. PCM programming may be necessary to avoid storing Diagnostic Trouble Codes (DTC) for the absence of emission equipment
• When using a 4L60E or 4L80E transmission, you must have a two-position brake switch. These are necessary to allow for the proper function of the TCC. The brake switch should be closed (electronically connected) when brakes are not being applied and open (not electronically connected) when brakes are being applied. This is the opposite of a standard brake switch.

CAUTION: Failure to wire the brake switch correctly can result in the torque converter being unable to unlock.

JEGS 555-10414 GM LS Engine Swap Wiring Harness Included Connectors:

• Fuse/Relay Box
• Fuel Pump Control
• Fan Controls
• Check Engine Light
• IAC and TPS
• MAF Sensor
• MAP Sensor
• Engine Coolant Temp Sensor
• Alternator Control
• (2) Upstream Oxygen Sensors
• Crankshaft Position
• Camshaft Position
• Fuel Injectors
• Automatic Transmission Control
• Knock Sensors

JEGS 555-10414 GM LS Engine Swap Wiring Harness Notes:

• GM LS1 and LS6 main engine harness. For applications with 24x crank sensors