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The Wiring Specialties SR20DET Wiring Harness includes the engine and transmission harness for a USDM S13 240sx with an SR20DET swap. 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: S13 SR20DET   Any Redtop from 1990-1993.5 Silvia Any Blacktop from 1994-1998 180sx Supports Engines with ECU - 62, 63, E4, E5 See example of ECU CODE For ECU code J4/J5 (Type-X III) Select above and we will prep the harness prior to shipping.   Chassis: USDM S13 240SX   For RHD/Australian/JDM chassis - click here Any US S13 240sx manufactured in 1989-1994 (Including the convertible and ABS cars) Transmission Harness supports 5-speed and Auto to 5-speed conversions   Engine and Transmission Harnesses Feature: Brand new wiring and connectors INCLUDES ABS wiring for the S13 240sx Support 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 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 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.