Gen 3 LS 4L60e or 4L80e Add-On Harness

APPLICATION: To add a 4L60/80e to a manual gen 3 harness.

Have a manual transmission harness for your gen 3 LS engine and looking to add 4L60e or 4L80e control? This add-on sub harness comes pre wired so you can pin it directly into your computer. Each wire has the printed PCM pin location directly on the wire, taking the guesswork out of where each wire goes! All wires go directly to the PCM, and one wire needs a switched 12v ignition source. There will also be a print out instruction sheet (email available as well) to assist with installation.

NOTE: Your computer MUST be retuned for automatic transmission control function! You can send the PCM to PSI for this (additional charge) or have a local tuner adjust the tune.

The harness is approximately 7 feet long from the transmission connector to the PCM terminals.

Looking for an Affordable, In Stock, Plug and Play wiring harness for your LS Swap? PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. All PSI Harnesses are Made in the USA and are 100% Computer Quality Tested. In addition to wiring harnesses, PSI carries Holley Products, Vintage Air A/C, Dakota Digital Gauges, HPTuners and PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion!

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Gen 3 LS 4L60e or 4L80e Add-On Harness

Gen 3 LS 4L60e or 4L80e Add-On Harness

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