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The Wiring Specialties SR20DET Wiring Harness includes the lower harness for an S13 SR20DET tranmission installed into any S14 240sx. Each Pre Made Harness will save you time, improve engine performance, give your engine bay a factory look and comes equipped with our Turn Key Start-Up Guarantee!  Engine: S13 SR20DET  Any Redtop from 1990-1993.5 Silvia or 180sx Any Blacktop from 1994-1997 180sx  Chassis: S14 240SX  Any S14 240sx manufactured in 1995-1998 Transmission Harness supports 5-speed and Auto to 5-speed conversions Harness supports ABS equipped cars  Transmission Harness Features: Brand new wiring and connectors Installs in 15 minutes- Improved grounding connectors over stock OEM connector specs (no cheap aftermarket connectors that fall apart) Replaces the OEM transmission harness entirely Designed for a factory-like installation and look for the S14 240sx Works with the S13 and S14 Speed Sensors OEM wiring connections and 'T' junctions. No soldered connections at all Fully tested after production for an easy plug-and-play replacement Turn Key ENGINE START Guarantee Tech support for our customers 7 days a week. Â