The Wiring Specialties RB20DET Wiring Harness includes the engine harness for an RB20DET motor installed into any S13 240SX. Completely replace your old engine and transmission harnesses with brand new ones,save time and money! 


  • Brand new ENGINE harness
  • Brand new INJECTOR sub-harness
  • Brand new KNOCK SENSOR harness
  • Instruction on S13/S14 Tach adjustment for RB engine  

  • Any Second Gen RB20DET from 1989-1993 Skyline GTS/GTST
  • Any Second Gen RB20DET from 1989-1993 Nissan Laurel and Cefiro
  • 200zx Z31 and Gen 1 model RB20 is NOT supported (unsure, ask)

  • Any S13 240sx manufactured in 1989-1994 (Including the Convertible and ABS cars)- Transmission Harness supports 5-speed and Auto to 5-speed conversions

  • Brand new wiring and connectors
  • Each Engine harness contains the OEM 5-pin MAFS connector
  • Replaces the OEM engine harness entirely
  • INCLUDES ABS wiring for any S13 240sx
  • Support the OEM Consult port (DOHC models and up)- Installs in 15 minutes
  • Improved ECU grounding- OEM connector specs (no cheap aftermarket connectors that fall apart)
  • Designed for a factory-like installation and fit and finish for the S13 240sx
  • Retains OEM wiper functionality
  • Retains Cruise Control and all gauge functions
  • Works with the Greddy/Freddy intake manifolds
  • All A/C, Temp override, Auto On/Off functions properly
  • OEM wiring connections and 'T' junctions. No soldered connections at all
  • Fully tested after production for an easy plug-and-play replacement
  • Will improve engine performance through better grounding and power wiring
  • Turn Key ENGINE START Guarantee