PSI - Gen 4 LS Standalone Harness (58X) DBW USCAR Manual

Standalone Gen 4 LSx Engine Wire Harness DBW (58X)

T56, TR6060, or Non-Electronic Automatic Transmissions

This drive-by-wire harness is designed to retrofit Gen 4 LS engines with 58X reluctor wheels into classic cars using manual transmissions (T56/TR6060) or non-electronic automatics (TH350, TH400, Powerglide). Built with OEM-grade components and a professional layout, it’s a plug-and-play solution for street rods and muscle car builds.

Parts Included:

• Complete engine wiring harness
• Instruction manual

The harness includes connections for:

• Fuse and relay box
• Fuel pump control (relay included)
• Fan controls (relays sold separately – use SKU PSI-FAN)
• Check engine light
• Speedometer
• Tachometer
• OBD2 diagnostic port
• Accelerator pedal Corvette #ENG022 (WCAPP40)
• Throttle body DBW (WCTHB40)
• MAF sensor 5 wire, card style (SEN026, WCMAF41)
• MAP sensor (delphi connector, WCMAP40)
• Engine coolant temperature sensor, 2 wire (WCCTS30)
• Alternator (4 pin, WCALT30)
• (2) Black Trapezoid upstream oxygen sensors (WC0XY38)
• Crankshaft position sensor
• Camshaft position sensor
• Fuel injectors (EV6 / USCAR / WCINJ40)
  
• Coil packs (WCCLF30) requires 2 coil harnesses, NOT included, such as WEC0I3
  
• Knock sensors (WCKN040)
  
• Oil pressure sensor LS3 (SEN036, WC0IL40)

Additional Info:

• Built using brand new GM Delphi connectors and TXL high-temp wire to OEM specs
• 100% quality inspected before shipping
• Four-wire hookup: switched power, constant power, and ground connections required
• PCM must have VATs removed (available through PSI)
• DOD/AFM not supported with this harness
• Sliding grommet allows for a professional, leak-proof install