Standalone wire harness are designed for GM 1999 - 2006 Ls Engines with Drive by Cable Throttle Body or Drive by Wire with a 4L60E , 4L80E, and Manual Transmission. Exact OEM design for easy installation. Extended length to mount ECM in multiple locations.

Harness 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
Crankfshaft Position
Camshaft Position
Fuel Injectors
Coil Packs
Automatic Transmission Control
Knock Sensors