This Wiring Specialties PRO Series harness was designed from the ground-up, specifically for a Universal  installation with a NA SR20DE engine swap. It was developed in house on an actual SR 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.  

Engine: S13/S14/S15 SR20DE

  • Any RWD naturally aspirated SR20DE engine from S13, S14 or S15 chassis.

Chassis: Any Application

  • Any Classic chassis
  • Sports cars with no OEM body wiring or Non EFI cars
  • Race cars
  • Cars that benefit from EFI wiring run without body wiring connection

SR20DE Specific Details:

  • NOTE: The S13, S14 and S15 SR20DEs do differ in ECU and engine wiring. The actual harness will be finished to the specifications selected in the order
  • When using the S13/S14 SR transmissions, the speed sensor from these transmissions will be wired in and will allow the speedometer to function
  • The S15 SR20DE 5-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
    • ** Most aftermarket ECUs will require conversion to coil on plug ignition system.
    • 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.

INCLUDED WITH THIS PRO-SERIES HARNESS

  • Main Engine and Transmission one-piece tucked harness
  • Alternator charge cable
  • Knock sensor connector
  • MAFS connector (OEM or Upgraded)
  • VTC connector (for S14 and S15 models)
  • TPS Connector
  • 4x Injector connections
  • Distributor Crank Position and Coil connectors
  • OEM Oxygen sensor connector (wideband wiring is not part of the EFI harness and needs to be supplied
  • Ground ring terminal
  • Idle and fast idle connectors
  • Engine coolant sensor and gauge coolant temp switch
  • Reverse sensor connector
  • Speed sensor connector
  • Alternator 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
  • Turn Key ENGINE START Guarantee

Return Policy

 

All items are subject to a 20% restocking fee on all returnable items within the 14 days of the purchasing date depending on their condition when returned.

If you placed an order and received free shipping but returned an item and you no longer qualify for the free shipping, you, the buyer, are responsible for paying the original cost of shipping and the return shipping cost..

What is a reasonable restocking fee? It is the percentage of the item’s price depending on type of item and condition when it is returned. Our restocking fee is 20%.

Type of Return Request

Restocking Fee Applied?

Buyers changes mind, buyer remorse or price difference

Yes

Buyer refuses delivery

Yes

Buyer returns an item but it arrives to the seller damaged, defective or materially different than what was originally shipped by the seller

Yes

Buyer receives an item materially different from what they ordered

No

Order is returned as undeliverable

No but an amount equivalent to the return shipping costs will be deducted

Items arrive to the buyer damaged or defective

No

Buyer refuses delivery due to visible damage incurred during shipping or caused by the carrier

No