Wiring Specialites Pro Series Harness for Nissan 240SX '89-'94 w/ S15 SR20DET
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Our Pro-Series is ideal for those looking for the best aesthetics, weight savings and reliability. Completely replace your old harness and forget about electrical gremlins. Dress up your bay and take all the pain out of wiring work with this harness.
This Wiring Specialties PRO Series harness was designed from the ground-up, specifically for a USDM LHD S13 240sx (89-94) with a S15 SR20DET engine swap. It was developed in house on an actual RB25DET NEO engine to ensure a perfect fit to all engine sensors.
The harness is designed 'Tucked' for a clean installation. The harnesses are built to exceed OEM spec for wire quality and power/ground routing.
Wiring Specialties offers a number of options for common performance upgrades for this product. Build your perfect harness by selecting from the available options to the right.
When using SR or KA transmissions, the speed sensor from these transmissions will be wired in and will allow the speedometer to function
The S15 6-speed Transmission does NOT have a speed sensor and the speedometer will not function. A S15 differential should be used to generate a speed sensor signal. This option must include the SGI5 frequency modulator to allow for calibrating the speed signal and accurately display the speed
**For aftermarket ECUs and Speed/Density conversion, the harness will include an IAT sensor and a MAP sensor connectors instead of the MAFS connectors
** Apex’I PFC conversions ONLY include the IAT sensor on the main harness. The MAP sensor is wired separately, from the PFC box, directly to the sensor. MAP sensor harness should be purchased with the PFC
The ECU Patch harness is just an extension of the ECU connector, usually used for tap-ins and pickup points without having to damage the actual engine harness.
Main Engine and Transmission one-piece tucked harness
Alternator charge cable
4x Coilpack connections (S15 Specific)
Knock sensor connector
MAFS connector (OEM or Upgraded)
Boost solenoid wiring
4x Injector connections
Cam sensor connector
OEM Oxygen sensor connector (wideband wiring is not part of the EFI harness and needs to be supplied
Ground ring terminal
Engine coolant sensor and gauge coolant temp switch
Reverse sensor connector
Speed sensor connector
Starter signal connector
OEM oil pressure 1-pin connector (only 1-pin version supplied)
Nissan Diagnostics connector
Dash and fuse box connections through the Interface harness
Printable install instructions with pictures
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