LS SWAP VIDEOS AND HOW TO'S Your Source LSX Conversion Parts. PSI specializes in the design and manufacture of GM Standalone Wiring Harnesses for LT1 and LS Engines and Transmissions.

PSI VIDEOS

United by Trucks

PSI Harness Installation video

United by Trucks Review- second half 11:00 on -

Eric Martin

PSI Harness Installation video

Xtreme CFM LSX Cylinder Heads

PSI Harness Installation video

PSI Quick Minute

PSI How to solve your 6L80e "No Communication with ECM" issue Video

PSI Harness in Bitchin Kindigit Camaro

PSI Harness in All Girls Garage 370Z with LS3

PSI Harness on Fast N Loud

PSI Harness Install with Texas Speed

The Driveway Engineer

Reviewed our Made In USA Proud Harness opposed to the attempts to replicate our harness- harnesses prone to premature failure

Comparison video (Long) - https://www.youtube.com/watch?v=Cju9PTN_h0w&t=28s

Comparison video Conclusion (Short)- https://www.youtube.com/watch?v=1a5-4kyi4Rs

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. 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 needs!

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