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

(4.8L, 5.3L, 6.0L, 6.2L, 7.0L) 4L60E Transmissions Only

Designed for Gen 4 LS swaps using 58X reluctor engines, this drive-by-wire harness supports LS2, LS3, LS7, LY6, L92, L76, LMG, and GMPP crate engines. Built for retrofitting into classic muscle cars and street rods, the harness delivers a clean, plug-and-play install with OEM-grade components and flexible routing thanks to its extended length and sliding grommet seal.

Parts Included:

• Complete engine and transmission 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 and throttle body (DBW setups)


• MAF sensor


• MAP sensor


• Engine coolant temperature sensor


• Alternator


• (2) Upstream oxygen sensors


• Crankshaft position sensor


• Camshaft position sensor


• Fuel injectors (EV6)


• Coil packs


• Automatic transmission control


• Knock sensors

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)


• Requires E38 ECM, Corvette or Vortec truck DBW pedal, and MAF sensor


• DOD/AFM not supported with this harness


• Sliding grommet allows for a professional, leak-proof install

USD : 92.69