The Wiring Specialties SR20DET Wiring Harness includes the engine and transmission harnesses for an S14 SR20DET motor installed into any S14 240sx. Replace both harnesses with brand new ones and save time and money! 

* For AEM MAP, Apexi, or Haltech conversions, please consider ordering the Pre-made PRO Series version of this harness 

Engine: S14 SR20DET  

• Any Blacktop from 1994-1998 Silvia
• Supports Engines with ECU
• WC, WR and NA See example of ECU CODE

Chassis: S14 240SX  

• Non ABS 240sx manufactured in 1995-1998
• ABS models need to have ABS wiring installed
• select the ABS option above to have ABS installed
• Transmission Harness supports 5-speed and Auto to 5-speed conversions

Engine and Transmission Harnesses Feature:

• Brand new wiring and connectors
• Supports the OEM Consult port
• Installs in 15 minutes
• Improved grounding routing by addition of internal cross-grounding
• OEM connector specs (no cheap aftermarket connectors that fall apart)
• Designed for a factory-like installation and fit and finish for the S14 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
• Replaces the OEM engine harness entirely- Supports both S13 and S14 Speed Sensors
• Transmission Harness supports 5-speed and Auto to 5-speed conversions
• Will improve engine performance through better grounding and power wiring
• Turn Key ENGINE START Guarantee 
• Tech support for our customers 7 days a week.