Identify your Crank Sensor Color, It is located behind the starter on your engine block.
If your Sensor is Black you have a 24X Gen III Engine
If your Sensor is Gray you have a 58X Gen IV Engine
Identify your Cam Sensor Type
Identify your Throttle Body Type
Gen III Throttle Bodies have 3 Bolts securing them and can be DBC or DBW
Gen IV Throttle Bodies have 4 bolts securing them and are all DBW
Identify Your Fuel Injector Type using the Images below
Verify which Alternator Connector you have
Verify the MAP Sensor You are using as Delphi or Bosch
Verify the MAF Sensor You are using, the 5 Wire MAF Sensors may plug into your harness but are wired differently and may cause damage if not properly matched
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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