My Cart

Checkout

Customers also purchased

Subtotal
$0.00
Checkout
  • WIRING HARNESSES
    • LT1/LT4 (1992-97) GEN II
    • LS/VORTEC (24X) GEN III
    • LS/VORTEC E38 GEN IV (58X)
    • LT1/L83/L86 (2014+) GEN V
  • SHOP BY VEHICLE
    • BUICK
    • CHEVY
    • OLDSMOBILE
    • PONTIAC
    • FORD / MUSTANG
    • HOT ROD
    • NISSAN
    • JEEP
    • TOYOTA
  • PRODUCTS
    • ENGINE CONTROLLER KITS
    • PCMS AND HPTUNERS
    • BODY/CHASSIS HARNESS
    • ACCESSORIES PEDALS & SENSORS
    • GAUGE CLUSTERS
    • A/C & COOLING
    • FUEL SYSTEMS
    • ENGINE PARTS
    • TRANSMISSION PARTS
    • PIGTAILS & EXTENSIONS
    • APPAREL /BANNERS / GIFT CARDS
    • TERMINATOR X
  • LSX GUIDE
    • LTX GEN V GUIDE
    • LSX GUIDE
  • TECH
    • INSTRUCTIONS
    • FAQ's
    • PCM TUNING FORM
    • WHY PSI?
    • JAY LENO'S GARAGE
    • ASK OUR EXPERTS: 732-276-8589
  • VIDEOS
PSI Conversion - Performance Systems Integration Logo
  • Facebook
  • Twitter
  • Pinterest
  • Instagram
  • LinkedIn
  • Youtube
0
PSI Conversion - Performance Systems Integration Logo
  • WIRING HARNESSES
    • LT1/LT4 (1992-97) GEN II
    • LS/VORTEC (24X) GEN III
      • LS2 E40 (24X)
    • LS/VORTEC E38 GEN IV (58X)
      • LSA E67 GEN IV (58X)
    • LT1/L83/L86 (2014+) GEN V
  • SHOP BY VEHICLE
    • BUICK
    • CHEVY
    • OLDSMOBILE
    • PONTIAC
    • FORD / MUSTANG
    • HOT ROD
    • NISSAN
    • JEEP
    • TOYOTA
  • PRODUCTS
    • ENGINE CONTROLLER KITS
    • PCMS AND HPTUNERS
    • BODY/CHASSIS HARNESS
      • CHEVY
      • OLDSMOBILE
      • PONTIAC
      • FORD
    • ACCESSORIES PEDALS & SENSORS
      • MAF SENSORS
      • PEDALS & TAC MODULES
      • TUNE UP KITS
      • EXTRAS
    • GAUGE CLUSTERS
    • A/C & COOLING
      • AIR CONDITIONING
      • RADIATORS
      • RADIATORS W/ ELEC FANS
    • FUEL SYSTEMS
      • FUEL PUMPS & ACCESSORIES
      • GAS TANK KITS
    • ENGINE PARTS
      • ACCESSORY BRACKETS
      • MOTOR/TRANS MOUNTS
      • INTAKE MANIFOLDS
      • MAF SENSORS
      • THROTTLE BODIES
      • OIL PAN KITS
      • EXHAUST
      • TUNE UP KITS
      • VALVE COVERS
      • VALLEY COVERS
    • TRANSMISSION PARTS
      • PADDLE SHIFTERS (6L80E)
    • PIGTAILS & EXTENSIONS
      • ADAPTER HARNESSES
      • LS/VORTEC EXTENSIONS
      • LS/VORTEC PIGTAILS
      • LT1 EXTENSIONS
    • APPAREL /BANNERS / GIFT CARDS
      • APPAREL
    • TERMINATOR X
  • LSX GUIDE
    • LTX GEN V GUIDE
    • LSX GUIDE
  • TECH
    • INSTRUCTIONS
    • FAQ's
    • PCM TUNING FORM
    • WHY PSI?
    • JAY LENO'S GARAGE
    • ASK OUR EXPERTS: 732-276-8589
  • VIDEOS

Login to your account to access helpful features to expedite your checkout experience.

I forgot my password
Login
  • My Account
  • My Orders

My Orders

Use the form below to search through your orders.

Subscribe

Sign up to get the latest on sales, new releases and more …

Signup
Sorry, please correct the following errors:
  • Bullet 1
  • Bullet 2
  • Bullet 3
Thank you for subscribing to our newsletter.

About

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!

Help

  • Home
  • Products
  • Why PSI?
  • Contact Us
  • Privacy Policy
  • Warranty
  • Shipping
  • Return/Refunds

My Account

  • Account Login
  • My Orders
  • My Reviews
  • Dealer Signup

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 
techsupport@psiconversion.com

  • Facebook
  • Twitter
  • Pinterest
  • Instagram
  • LinkedIn
  • Youtube
Copyright ©   2017-2021  - PERFORMANCE SYSTEMS INTEGRATION
  • AMEX
  • Discover
  • MasterCard
  • PayPal
  • VISA

You must be logged in to access the wishlist feature.

Login or Register ×

Wishlist Updated

has been added successfully to your wishlist.

×