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Optimize your Chevy LS swap with standalone wiring harnesses tailored for 1992-97 LT1 and LT4 GEN II engines. Designed for seamless integration with 4L60E, T56, TH350, and 700R4 transmissions, these harnesses are the ideal solution for G-Body, Monte Carlo, and Malibu builds. Crafted for reliability and ease of installation, each harness provides all the necessary connections to get your engine running smoothly.
Whether you’re upgrading for performance or restoring a classic, these harnesses ensure compatibility and durability.
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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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Contacts
2029 Route 88
Brick, NJ 08724
ph. 732-276-8589 Mon-Fri: 8:00am to 6:00pm ET
customerservice@psiconversion.com
sales@psiconversion.com
Post sale tech support:
techsupport@psiconversion.com