The Wiring Specialties SR20DET Lower (Transmission) Wiring Harness is specifically built for S13 SR20DET transmissions installed into any Nissan 240SX S13 (89-94).

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: S13 240SX

• Any S13 240sx manufactured in 1989-1994
• 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 S13 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.